Our 100mm-lens Hasselblad photo of three of the Hawaiian islands was taken on Nov. 28, 1996 from an altitude of 190 nm (352 km). From Columbia, we noticed the clouds piled high on the windward side of Molokai (upper left), Lanai (center), and west Maui (upper right). Molokai’s highest point is 4970 feet, the summit of East Molokai volcano, the northern half of which slid into the sea in a titanic landslide. From the north shore, the projecting peninsula is a small shield volcano, the most recent eruption on Molokai, and the location of Kalaupapa, the site of a leper colony that operated from 1866 to 1969. Fr. Damien’s service there made the colony famous, and the community is now a national historical park. On the west end, the Papohaku Beach, a 3-mile long curve of golden sand, makes for an idyllic walk (been there, done that, and would still like to go back).
NASA says that Maui is the second youngest and second largest of the main Hawaiian Islands. Maui covers an area of 728 sq. miles (1886 sq. km). The island consists of two large volcanoes, West Maui (extinct, and visible here) and East Maui, (Haleakala) which last erupted in 1790. Lanai (near the center of the image), once owned by the Dole Pineapple Company, is the remnant of a volcano that is over one million years old. Lanai covers an area of 141 sq. miles (365 sq. km) and is 18 miles (29 km) long and 13 miles (21 km) wide. Molokai (situated north of Lanai) covers an area of 261 sq. miles (676 sq. km) and is 38 miles (61 km) long and only 10 miles (16 km) wide, with the west end being very dry.
The Molokai channel west of Maui and between those two islands is also known as Lahaina Roads, a deep-water, protected anchorage that was once a regular anchorage for the U.S. Pacific fleet. The Japanese Pearl Harbor striking force reconnoitered Lahaina Roads on the morning of Dec. 7, 1941, and found it empty. Had the U.S. battleships been sunk in Lahaina Roads, salvage and repair in those deep waters would have been impossible. “Lucky” the fleet was in Pearl Harbor on that fateful morning.
My family visited Lanai in 2001 and enjoyed the cool uplands on the slopes of the ancient volcano there, Mount Lānaʻihale, whose summit is at an elevation of 3,366 feet. On the south shore is Manele Bay, at Hulupoe Beach, a great spot for body surfing and snorkeling. Larry Ellison, co-founder of Oracle, owns most of Lanai–but he’s never had the view that our crew on Columbia did. (added 1/14/19)
Our STS-80 Columbia crew took the above 100mm telephoto image of the Nabro volcano on Dec. 6, 1996. We were 187 nm (346 km) above the shores of the Red Sea near the Afar Triangle, where the Red Sea enters the Gulf of Aden. Nabro is a stratovolcano in the Southern Red Sea Region of Eritrea. It is located at the south-east end of the Danakil Alps in the Danakil Depression. Before its 2011 eruption, the volcano was widely believed to be extinct. North is at the top of this image. Its twin calderas are at lower left; the 7,721-foot mountain has erupted black, basaltic lava flows from its caldera and flanks.
Part of the Afar Triangle, the Nabro Volcano is one of many volcanic caldera complexes in the northeasternmost part of the East African Rift valley region. The twin calderas likely formed during an eruption of about 20 to 100 cubic kilometres consisting of ignimbrite, although the date of their formation is unknown.
Until June 2011, Nabro had not erupted in recorded history, but an eruption from the caldera on June 13 that year produced a high-altitude ash cloud, and sent a basalt flow to the northwest of the caldera and killed several residents of this arid region. (posted Jan. 11, 2019)
Our Columbia crew was 187 nautical miles over the island of Hawaii, the Big Island, when we snapped this 250mm Hasselblad photo on Nov. 25, 1996. This view captures the summits of both of the island’s tallest volcanoes, Mauna Loa on the south (bottom), and Mauna Kea on the north, at right center with a tiny cluster of white clouds at its 13,803-foot (4207-meter) summit. In our view of the western half of Hawaii Island, volcanic smog from Kilauea (under the clouds to the right) swirls off the western shore, surrounding white clouds on the shoreline.
Hualalai volcano, with a summit at 8,271 feet, is at center left in this photo, dotted by cinder cones on its flanks. The Kailua-Kona airport is visible at the western tip of the island, surrounded by Hualalai lava flows from the early 1800s. The Kohala peninsula, the oldest dormant volcano on Hawaii, stretches northwest, its windward coast under cloud cover.
I particularly like this photo because under magnification, Mauna Kea’s summit (over 10,000 meters above the sea floor, and thus the world’s tallest mountain–but not the most massive) shows several of the observatories sited above most of the water vapor in the atmosphere. I used NASA’s Infrared Telescope Facility there in the late 1980s to search for water on asteroid surfaces.
More info from NASA:
Mauna Loa, or “Long Mountain,” is a volcano located on the big island of Hawai’i and is part of the Hawaiian Island chain. It is the world’s largest active volcano rising 13,680 feet above sea level. It is a shield volcano with a volume of approximately 18,000 cubic miles…With its summit standing roughly 17 km (56,000 feet) above its base and its flanks covering about half of the Island of Hawai‘i, Mauna Loa is the world’s largest volcano. According to the U.S. Geological Survey, Mauna Loa’s peak rises roughly 4 km above sea level, its flanks slope downward another 5 km to the ocean floor, and then it is so massive it compresses the sea floor another 8 km!
Mauna Loa has erupted more than 35 times since the island was first visited by westerners in the early 1800s. The large summit crater, called Mokuaweoweo Caldera, is clearly visible near the center of the image. Leading away from the caldera (towards top right and lower center) are the two main rift zones. Rift zones are areas of weakness within the upper part of the volcano that are often ripped open as new magma (molten rock) approaches the surface at the start of an eruption. The most recent eruption of Mauna Loa was in March and April 1984, when segments of the northeast rift zones were active.
If the height of the volcano was measured from its base on the ocean floor instead of from sea level, Mauna Loa would be the tallest mountain on Earth. Its peak (center of the image) rises more than 8 kilometers (5 miles) above the ocean floor. The South Kona District, known for cultivation of macadamia nuts and coffee, can be seen on the left. North is toward the top. Mauna Loa presents a future hazard to the local towns of Hilo and Kona. The Kilauea volcano is located off to the right of Mauna Loa and is not visible in this image.
(added Dec. 11, 2018) Our crew shot this 250mm Hasselblad image of Midway atoll in the central Pacific (“midway” between San Francisco and Tokyo) on Nov. 23, 1996, from an altitude of 189 nautical miles (350 km). I was always on the lookout for Midway due to its significance in WWII. Our photo shows Sand Island on the west, Eastern Island on the right, and the protected lagoon with its shipping channels cut through the coral and sand. As NASA points out:
Like tiny pearls floating in a vast sea, the tiny islands and atolls of the North Pacific Ocean can be difficult to view from space as they sit in the deep blue expanse of the North Pacific Ocean.
…Midway’s beautiful blue and silver coloration is not from the land mass, but from the coral reef ringing the island. At the highest resolution, the scant 6.2 square km of land appears tan. Sand Island is the largest island and sits to the west of second largest island in the atoll, Eastern Island. At its peak, the land only rises only 13 meters above sea level.
Midway Atoll is just 150 miles east of the International Dateline, making it truly midway around the world from the Greenwich meridian. It sits on the far northern end of the Papahānaumokuākea Marine National Monument, and is the only atoll or island in the Hawaiian archipelago not part of the State of Hawaii. In 1988, Midway became a National Wildlife Refuge and is now administered by the U.S. Fish and Wildlife Service.
The rich waters and bits of land that make up Midway Atoll provide a home for a wide variety of species. A complex community of invertebrates and coral reef fishes thrive in the protected lagoon and in the reefs. An estimated 3 million individual birds of at least 21 species nest on the tiny islands, filling nearly every square inch of available habitat. The beaches provide nursing grounds for the endangered Hawaiian monk seals, and a place for threatened green turtles to haul out for a much needed rest.
On June 4, 1942, Midway was attacked by Japanese Admiral Yamamoto’s Imperial Combined Fleet in an attempt to lure the U.S. Navy’s aircraft carriers to their destruction. Japanese strike aircraft bombed the aircraft hangars, command post, and fortifications, but did not put the airfield out of operation (they hoped to capture it for their own use). During a desperate series of air battles, three U.S. carriers surprised the Japanese carrier striking force and sank all four of its fleet carriers by the end of the day. The U.S. Navy lost the carrier Yorktown to air and submarine attack, but the destruction of the Japanese fleet’s air striking arm forced its withdrawal, and marked the end of Japanese expansion in the Pacific.
Despite its historical importance and some remaining WWII structures (and a long runway on Sand Island) tourism to Midway is not currently permitted by the U.S. government:
I urge the Fish and Wildlife Service will reopen this important site to tourism.
(Added 12/6/18) East of Mt. Everest near the borders of Tibet, Bhutan, and China, we on Columbia caught an early morning view of Jomolhari, at the center of our telephoto Hasselblad shot. Its long shadow is what caught my eye, as did the shadows thrown by this entire range. Adjacent to the right is the slightly lower peak of Jichu Drake, feeding a glacier stretching east. North is to upper right. Jomolhari reaches 24,035 feet MSL.
From Wikipedia: “Jomolhari is sometimes known as “the bride of Kangchenjunga,” the world’s third tallest mountain. Jomolhari’s north face rises over 2,700 metres (8,900 ft) above the barren plains. It’s the source of the Paro Chu (Paro river) which flows from the south side and the Amo Chu which flows from the north side.”
That lake at right center is called Duoqing Co., and just to the southeast runs another line of jagged, saw-toothed peaks. What a vantage point we had!
(Edited Dec. 5, 2018) Soaring eastward over the vast Sahara, we enjoyed repeated views of the exposed sands and bedrock of this arid region, laid bare by the lack of vegetation. Here is our crew’s 250mm Hasselblad telephoto shot of the Emi Koussi volcanic summit in Chad.
According to NASA, the broad Emi Koussi volcano is a shield volcano located in northern Chad, at the south-eastern end of the Tibesti Range. The dark volcanic rocks of the volcano provide a sharp contrast to the underlying tan and light brown sandstone exposed to the west, south, and east (image lower left, lower right, and upper right). This astronaut photograph highlights the entire volcanic structure. At 3,415 meters above sea level, Emi Koussi is the highest summit of Africa’s Sahara region. The summit includes three calderas formed by powerful eruptions. Two older and overlapping calderas form a depression approximately 12 kilometres by 15 kilometres in area bounded by a distinct rim (image centre). The youngest and smallest caldera, Era Kohor, formed as a result of eruptive activity within the past 2 million years.
Although the volcano hasn’t erupted in recorded history, there are recent lava flows on the flanks of the mountain, and hot springs and fumaroles are still active at its foot. Emi Koussi reminds me of some of Mars’ ancient shield volcanoes.
(Dec. 6, 2017 entry:)
Twenty-one years ago, my Columbia crewmates (Ken Cockrell, Tammy Jernigan, Story Musgrave, and Kent Rominger) and I were still a day away from landing in Florida, and snapping Earth photos as fast as our index fingers could hit the shutter button. This Hasselblad 70mm photo was taken on Nov. 28, 1996 as we soared over the Arabian peninsula. This region of the Middle East is one of the most recognizable landscapes seen from space, thanks to its unique geographical features. Here’s the NASA caption:
A view to the west showing Asia in the foreground and Africa in the background, as photographed by the space shuttle Columbia crewmembers. The Mediterranean Sea is to the upper right and the Red Sea to the lower left. Sinai Peninsula is between the two with the Gulf of Suez above and the Gulf of Aqaba below. The Suez Canal connects the Gulf of Suez with the Mediterranean Sea. The triangular shaped dark area beyond is the Nile River Delta. The thin green fertile valley of the Nile crosses the photograph from a point at Cairo (near dark triangle area) past the great bend at Luxor with Thebes and the Valley of the Kings, and on the left into the Nubian Desert with the Aswan High Dam at the very left edge of the photograph. To the horizon is the Western Desert of Egypt and Libya. The foreground is the northwest portion of Saudi Arabia, an area known as the Hejaz with the southern portions of Israel and Jordan to the lower right. (NASA STS080-745-004)
(Nov. 27, 2017) As winter comes on here on the US East Coast, it’s easy to imagine the attractions of the warm, sun-kissed beaches of Hawaii. Twenty-one years ago on Columbia, STS-80, my crew gazed down at the island of Oahu–and wished we could just spiral down for a few days of relaxation. Here’s the NASA caption (modified by me to fit this “north at top” image):
The capital of the state of Hawaii was photographed by the crew members aboard the Earth-orbiting Space Shuttle Columbia on Nov.25, 1996. North is at top. The western portion (left part of photograph) of the well eroded extinct volcano is quite visible under clear skies. The northeastern coastal area and Koolau Range of mountains, which runs the length of the island (30 miles) are cloud-covered. This is the windward side of the island (great for surfing) and the warm moist Pacific winds sweep up the mountains thus causing the clouds and an unusually high rainfall. The city of Honolulu is along the lower right side with the Honolulu International Airport clearly seen. To the left of the airport is the narrow entrance to Pearl Harbor and nearby Hickam Air Force Base. The narrow sand beaches of the Waikiki Beach resort area, just left of Diamond Head – on the lower right, appear as narrow white lines along the coast to the right of the airport and port of Honolulu. The sharp point at the leftmost portion of the photo is Kaena Point. The cliffs there are so steep that there is no developed roadway, although a narrow gauge railway was carved into the cliffs and operated the first half of the century. (NASA STS080-758-065)
A keeper: Mount Everest is the pyramidal peak at center, at the end of the longer arm of the V-shaped valley at bottom center. Tibet is to the bottom (north), with Nepal at top, beyond Everest. Rongbuk Glacier flows to the north (bottom) while Khumbu Glacier flows to the south from Mount Everest. Many other glaciers are visible. The snow level is about 4,000 meters south of the divide or crest, and about 6,000 meters north of the divide (bottom of image), in the rain shadow. We always used the V-shaped valley as a pointer to find Everest from our orbital vantage point, 220 nautical miles up. (NASA STS080-733-001–19 Nov.-7 Dec. 1996)
My Key West entry comes 21 years after our STS-80 flight aboard Columbia: 18 days of complex satellite operations and maneuvers, coupled with outstanding opportunities for Earth photography.
I’ve been to Key West several times; the city is now in the middle of its recovery from Hurricane Irma in 2017. The Keys and their surrounding waters are one of an astronaut’s favorite terrestrial landmarks. Haven’t had my last visit to the Keys, or its fresh seafood restaurants and Cuban-style coffee.
NASA caption: The view shows the city of Key West, bottom mid-right, with Marathon Key, near top middle left, and the edge of the Straits of Florida, the dark water on the right edge. Clouds form over the cooler waters of the strait. The runways at Boca Chica Key Naval Air Station are seen near Key West. The bottom can be seen clearly in the shallow water, the deeper water has depths of over a half a mile. The thin line of the Overseas Highway can be traced east from Key West. Prior to a hurricane in 1935, this route was a railway line.
The Pic Tousside volcano on the Tibesti Plateau in northern Chad, photographed from STS-80, Columbia. (NASA sts080-722-13)Crossing the Sahara wastes in orbit on Columbia, our crew captured this view of the Pic Tousside volcano, using a 250mm lens on a Hasselblad 70mm film camera. The volcano is an eye-catching landmark on the way from Morocco to the Nile Valley. Note the numerous cinder cones at the top of the photo on the mountain slopes; the black basalt lava flows are running downhill, of course.
NASA’s Earth Observatory site says the following:
The Tibesti Mountain Range in northern Chad is one of the world’s least-studied volcanic regions. A look at the area from space, however, must intrigue volcanologists. One of the Tibesti Mountain’s features is Tarso Toussidé.
Looking like the result of a giant inkwell tipped on its side, Tarso Toussidé underwent a violent eruption in the recent geologic past, and the remains of that eruption have stained the ground black. The volcano ejected tephra, fragments of rock and volcanic glass, lava, and ash. Tephra does not last on the landscape as long as consolidated volcanic rocks such as tuff or lava, so the presence of tephra suggests fairly recent activity. In the middle of the field of dark tephra is Pic Toussidé, a lava dome poking out of the current caldera.
Volcanoes often sport multiple calderas, particularly as the primary site for eruptive activity shifts over time. East of Pic Toussidé are two calderas, the southern one bearing a white splotch roughly 2 kilometers long. This white color could result from salt. Water pooling in the caldera would not have an outlet, and as the water evaporated, minerals such as salt would be left behind.
My Columbia crewmates and I took this shot on STS-80 with a 70mm Hasselblad film camera using a 100mm lens. On December 5, 1996, our altitude over the northeastern plains of India was about 185 nm. Master geologist and astronaut instructor Bill Muehlberger wrote the caption above; Bill helped teach the Apollo astronauts their geology skills, and he took my Hairball astronaut class to the field in New Mexico to teach similar lessons. At the southern base of the Himalaya (bottom center) is the Brahmaputra River, flowing from east to west (right to left) on its way to join the Ganges. The Brahmaputra River (also called as “Burlung-Buthur” by the Bodo people of Assam), called Yarlung Tsangpo in Tibetan language, originates on the Chemayungdung Glacier located on the northern side of the Himalayas in Tibet. The river is 3,848 km (2,391 mi) long. The river flows around and through the eastern ranges of the Himalaya and returns in the lower part of the photo, flowing to the west, to join the Ganges.
The Tibetan Plateau is the tan area at upper left. The spidery lake at left edge of the photo is Yamzha Yumco. Lhasa, Tibet lies just to the north. The Jiali tectonic fault slashes across Tibet from upper left to right. At far right center, the Brahmaputra emerges from the mountain front and carries an immense load of silt and sand toward the Bay of Bengal in the Indian Ocean. Geologists estimate that the Brahmaputra transports approximately 13 million tons of suspended sediment per day during floods. This is one corner of the world where erosion is tearing the Himalaya down almost as fast as they are pushed skyward.
This STS-80 Columbia image, shot with a 250mm lens on a Hasselblad 70mm body, shows one of our favorite Sahara targets, the Aorounga impact crater, which may be a chain of 3 circular impact craters. Radar images from STS-59, Space Radar Lab 1 (April 1994, my first mission), revealed what looks like two smaller craters to the northeast. This entire frame is about 25 miles across.
From NASA’s Earth Observatory: Aorounga Impact Crater is located in the Sahara Desert, in north-central Chad, and is one of the best-preserved impact structures in the world. The crater is thought to be middle or upper Devonian to lower Mississippian (approximately 345–370 million years old) based on the age of the sedimentary rocks deformed by the impact. Spaceborne Imaging Radar (SIR) data collected in 1994 suggests that Aorounga is one of a set of three craters formed by the same impact event. The other two suggested impact structures are buried by sand deposits.
The concentric ring structure of the Aorounga crater—renamed Aorounga South in the multiple-crater interpretation of SIR data—is clearly visible in this detailed astronaut photograph. The central highland, or peak, of the crater is surrounded by a small sand-filled trough; this in turn is surrounded by a larger circular trough. Linear rock ridges alternating with light orange sand deposits cross the image from upper left to lower right; these are called yardangs by geomorphologists. Yardangs form by wind erosion of exposed rock layers in a unidirectional wind field. The wind blows from the northeast at Aorounga, and sand dunes formed between the yardangs are actively migrating to the southwest.
We took this image from Columbia on November 24, 1996, from an altitude of 188 nautical miles. Mount Pinatubo is an active stratovolcano on the island of Luzon, in the Philippines. On all my flights (which all came after the 1991 eruption), I’ve observed the downhill migration of volcanic ash from the summit and its crater lake. The crater lake and mud flows are seen very well here, after the 1996 monsoon season. Note the now-closed Clark Air Force Base (and now reopened commercial airport) on the plains at lower right.
From Wikipedia: Before 1992, Pinatubo was heavily eroded, inconspicuous, and obscured from view. It was covered with dense forest which supported a population of several thousand indigenous Aetas people.
The volcano’s eruption on June 15, 1991 produced the second largest terrestrial eruption of the 20th century (after the 1912 eruption of Novarupta in the Alaska Peninsula). Complicating the eruption was the arrival of Typhoon Yunya (Diding), bringing a lethal mix of ash and rain to areas surrounding the volcano. Predictions at the onset of the climactic eruption led to the evacuation of tens of thousands of people from the surrounding areas, saving many lives. Surrounding areas were severely damaged by pyroclastic flows, ash deposits, and, subsequently, by the lahars caused by rainwaters re-mobilizing earlier volcanic deposits. This caused extensive destruction to infrastructure and changed river systems for years after the eruption.
The volcano’s Plinian / Ultra-Plinian eruption on June 15, 1991 produced the second largest terrestrial eruption of the 20th century after the 1912 eruption of Novarupta in the Alaska Peninsula. Complicating the eruption was the arrival of Typhoon Yunya (Diding), bringing a lethal mix of ash and rain to areas surrounding the volcano. Predictions at the onset of the climactic eruption led to the evacuation of tens of thousands of people from the surrounding areas, saving many lives. Surrounding areas were severely damaged by pyroclastic flows, ash deposits, and, subsequently, by the lahars caused by rainwaters re-mobilizing earlier volcanic deposits. This caused extensive destruction to infrastructure and changed river systems for years after the eruption.
NASA text by my colleague, volcanologist Dr. Cindy Evans: In early 1991, Mt. Pinatubo, a volcano north of Manila on the Philippine island of Luzon, had been dormant for more than 500 years. Few geologists would have guessed that it would produce one of the world’s most explosive eruptions in the twentieth century. Indications of unrest started a few months before the June 1991 eruption, but the size and impact of the eruption were completely unexpected. During the June 12-15 eruptive climax, the top of the mountain was blown off, lowering the elevation by roughly 150 m. About 8 to 10 km2 of material (Scott, et al., 1996) spewed out of the volcano onto the surrounding slopes. The eruption forced evacuation of more than 50,000 people, and effectively shut down two major US military bases (Clark Air Force Base and Subic Bay Naval Base); it was ultimately responsible for taking several hundred human lives.
Before the eruption, Mt. Pinatubo was a forested, deeply dissected and unimposing mountain on Luzon’s Bataan Peninsula. Although the upper slopes were steep and not well suited for agriculture, the lower slopes were heavily populated and supported extensive rice fields.
During the eruption, the upper slopes of the mountain suffered immediate destruction. The climactic explosions of June 14–16, 1991, blasted away the summit of Pinatubo, blew down surrounding forests, and rained hundreds of cubic meters of loose sand and gravel down on the mountain’s upper slopes. Floods of hot volcanic slurries were responsible for long-lasting damage downslope.
Astronauts did not observe the June 1991 eruption of the volcano—but they have routinely monitored subsequent changes around Mt. Pinatubo. The eruption had two major environmental effects which are readily documented from low-Earth orbit: the distribution of vast quantities of sulfur dioxide aerosols into the stratosphere; and the post-eruption mudflows, or lahars, which are recognized as the major natural hazard from the eruption.
This image of Ayers Rock and the Olgas (Uluru and Kata Tjuta) and the surrounding terrain was captured by the crew of space shuttle Columbia during the STS-80 mission; it was taken on Dec. 6, 1996, from an altitude of 202 nautical miles. We always looked for a chance to shoot Uluru on our passes over Australia, and this was a particularly nice pass, captured with a 100mm Hasselblad lens on 70mm film. I trained for both my Space Radar Lab missions at Ayers Rock and the Olgas with a NASA team flying the agency’s DC-8 aircraft out of nearby Alice Springs. Fellow STS-59 astronaut Linda Godwin and I drove 5 hours from Alice Springs to visit these famous rock formations. In this image, Uluru is at right, with Kata Tjuta and its highest promontory, Mt. Olga, on the left. Lake Amadeus is at top.
From NASA’s “Visible Earth” website: Seen from ground level, this majestic sandstone rock formation stands 348 meters (1,120 feet) tall and is 3 kilometers (1.85 miles) long. Uluru is the ancient name used by Indigenous Australians; Ayers Rock is the name that was given to the landform by explorer William Christie Gosse in the 1800s. Uluru is one of Australia’s major tourist attractions (more than 270,000 visitors in 2014), with operations run by people from the small town of Mutitjulu. A 16-kilometer (10-mile) road circles the rock, and a disused airstrip lies near the town.
Uluru and a similar striking landform known as Kata Tjuta (Mount Olga) are part of the Uluru-Kata Tjuta National Park, created as a UNESCO site in 1994 for cultural preservation and protection. Uluru and Kata Tjuta are remnants of sediments eroded from an ancient mountain range that existed about 550 million years ago. The sediments were subsequently buried and compressed to form harder rocks—called arkose and conglomerate by geologists. These rocks were later tilted from their original horizontal orientation by powerful tectonic forces. Views from above now clearly show the hundreds of originally flat-lying layers that make up Uluru. Softer and younger sedimentary rocks were then eroded away, leaving the more resistant rocks exposed to form the present-day landforms.
Uluru is thought by native peoples to have been created by ancestral beings during the Dreamtime, which has been described as the essence of aboriginal culture and spirituality. The rock is regarded as one of the ancestors’ most impressive pieces of work. Ancient paintings throughout its caves and fissures describe this relationship, keeping Dreamtime traditions alive. The proximity of the Mutitjulu settlement to the rock symbolizes the spiritual connection between the local people and Uluru.
From NASA’s Earth Observatory website: In the heart of the Australian Outback, a massive block of red sandstone rises up out of the near-perfect flatness of the eroded landscape. Called Uluru, or Ayer’s Rock, this giant is a monolith 348 meters (1,142 feet) high, 3.6 kilometers (2.2 miles) long, and 9.4 kilometers (5.8 miles) around. It is the largest single rock known in the world. Tourists come from all over the country and the world to watch sunrise and sunset bring the colors of the rock to life.
Centered in the scene, Uluru appears a more subdued orange-red than the surrounding desert soils. These reddish soils and their location in the heart of the Outback give rise to the region’s nickname as Australia’s “Red Center.” Trees and other vegetation surround the base of the rock, giving the impression of streams of turquoise waters flowing out of the rock. The rock is carved and scoured by eons of erosion by wind and water. To the Aboriginal people, many of these features are part of the religious mythology through which they describe their existence and history in the region.
…Located in the Northern Territory of Australia, Uluru-Kata Tjuta National Park hosts some of the world’s most spectacular examples of inselbergs, or isolated mountains. The most famous of these inselbergs is Uluru (also known as Ayers Rock). An equally massive inselberg located approximately 30 kilometers (20 miles) to the northwest is known as Kata Tjuta. Like Uluru, this is a sacred site to the native Anangu or Aboriginal people. An English-born explorer named the highest peak Mount Olga, with the entire grouping of rocks informally known as “the Olgas.” Mount Olga has a peak elevation of 1,069 meters (3,507 feet) above sea level, making it 206 meters (676 feet) higher than Uluru.
Kata Tjuta is comprised of gently dipping Mount Currie Conglomerate, a sedimentary rock that includes rounded fragments of other rock types (here, primarily granite with less abundant basalt and rhyolite in a coarse sandy matrix). Geologists interpret the Mount Currie Conglomerate as a remnant of a large fan of material rapidly eroded from mountains uplifted approximately 550 million years ago. Subsequent burial under younger sediments consolidated the eroded materials to form the conglomerate exposed at the surface today.
Runways of the shuttle landing facility (top center) and Cape Canaveral Air Force Station’s “Skid Strip” (near the tip of Cape Canaveral) are visible. At top center are the shuttle launch pads, 39A and 39B; we launched from Pad 39B (northernmost/topmost pad). Indian River is at left, the Banana River at right, next to the Cape. The old ICBM Row launch pads (Mercury and Gemini) are clearly visible north of Cape Canaveral. I left Earth four times from this place–pretty special.
Monterrey is the capital and largest city of the northeastern state of Nuevo León, in Mexico. The city is anchor to the third-largest metropolitan area in Mexico and is ranked as the ninth-largest city in the nation. Monterrey is located in northeast Mexico, at the foothills of the Sierra Madre Oriental.
Monterrey Image Caption (NASA): Potrero Garcia and Potrero La Mula are breached salt-cored folds immediately north of the Sierra Madre Oriental and Monterrey. [Portrero Garcia is the triangular formation at upper left.–TJ] Individual limestone layers can be resolved in this beautifully detailed view, as can the tilt of the layers outward from the center of the fold (anticline). Most of the salt has been eroded from the core of the structure, but what remains is now being mined. In Las Grutas de Garcia (Garcia Caverns) the limestone bedrock has been dissolved and both limestone and gypsum formations decorate the cave.
Our STS-80 crew took this shot of Great Exuma Island and the Tongue of the Ocean on Dec. 3, 1996, from 185 nautical miles above the Bahamas. This is one of the loveliest ocean areas visible to orbiting astronauts.
A NASA caption says: This extraordinary image captures the meeting place of the deep waters of the Tongue of the Ocean and the much shallower, completely submerged Grand Bahama Bank. This platform reef drops off quickly into the branch of the Great Bahama submarine canyon that because of its shape is called the Tongue of the Ocean. The vertical rock walls of the Canyon rise 14,060 feet from their greatest depth to the surrounding seabed, which is why the water is so dark in color compared to the reef. The shallowest parts of the reef are no more than three to seven feet deep; so shallow, in fact, that in the northeast corner of the image you can zoom in and see large wave-sized ripples of sand on the bottom. Like so many other biological structures, the ribbon-like form of the reef maximizes surface area and thus the number of organisms that can colonize the structure. The closest land is the Bahama Islands of Great Exuma, less than 16 miles to the east [right side of the image], and Andros about 27 miles to the west.
Another look at the Bahamas, this time Eleuthera Island. We were always captivated by the deep, indigo waters of the abyss surrounding the calcium carbonate coral sands of the shallows surrounding the islands. I hope to stand someday on an Eleuthera beach.
From NASA: Turquoise, deep green, light blue, and bright sapphire blue colors combine in the waters surrounding the Bahamas to stand out against the deeper blue of the Atlantic Ocean. Because the 700 islands and islets sit on an underwater plateaus (called “banks”), the waters of the Bahamas are very shallow, ranging from barely covering the ocean floor to 25 meters in depth. (NASA)
East of southern Florida, large swaths of ocean water glow peacock blue. These waters owe their iridescence to their shallow depths. Near Florida and Cuba, the underwater terrain is hilly, and the crests of many of these hills comprise the islands of the Bahamas. The varied colors of these banks suggest their surfaces are somewhat uneven. The banks’ distinct contours, sharply outlined in dark blue, indicate that the ocean floor drops dramatically around them. In fact, over the banks, the water depth is often less than 10 meters (33 feet), but the surrounding basin plunges to depths as low as 4,000 meters (13,100 feet). (NASA)
Eleuthera is approximately 150 km long from north to south and, except for the northern and southern ends, is an average of 3-5 km wide. The countryside primarily consists of rolling hills and valleys studded with tranquil lakes and woodlands. The coasts alternate between high steep cliffs and beautify beaches. (Thomas M. Iliffe — Texas A&M University at Galveston)
From 187 nautical miles up, our Columbia crew imaged the island of Maui and Kahoolawe (lower left) on Nov. 25, 1996. Lanai is to the far left. The West Maui volcano is under clouds, but the sharply incised ravines running down to Lahaina and Kanaapali Beach show how much rainfall the mountain intercepts. Central Maui is clear, as are the resorts along the west-facing South Maui coast. Kahului airport is visible on the north central coast. The green slopes of Haleakala volcano (dormant) are visible at right. Haleakala National Park includes the volcano’s summit, at about 10,000 feet. A line of cinder cones follows the southwest rift zone up to the summit; darker, more recent lava flows mark the site of the most recent eruption on Maui, just before 1800 on the southwest tip of the island opposite Kaho’olawe. Haleakala’s summit caldera has been heavily eroded by heavy rains, creating a wide summit valley that drains both to the south, north, and east.
NASA’s Earth Observatory says:
In 1907, writer Jack London scaled a towering mountain in eastern Maui, the second largest of the Hawaiian Islands. When he reached the top and looked east, he was confronted with an otherworldly scene. “Far above us was the heaven-towering horizon, and far beneath us, where the top of the mountain peak should have been, was a deeper deep, the great crater, the House of the Sun,” London wrote. “The tie-ribs of earth lay bare before us. It was a workshop of nature still cluttered with the raw beginnings of world-making.”
That is not to say the area is not rich with signs of volcanic activity. “This floor, broken by lava flows, and cinder cones, was as red and fresh and uneroded as if were but yesterday that the fires went out,” London noted. “The cinder-cones, the smallest over four-hundred feet in height and the largest over nine-hundred, seemed no more than puny little sand hills, so mighty was the magnitude of the setting.”
…There is less vegetation in the valley—which comprises much of the national park—than to the north and east of the mountain because the valley lies in a rain shadow. Prevailing winds drop rain on the eastern and northern sides of the mountains because moisture gets squeezed from the air as it flows up and over the slopes. The cinder cones—steep conical hills around volcanic vents—appear as small mounds in the middle of the valley.
While London was correct that the lava flows are young, his time scale was a bit off. According to the U.S. Geological Survey, radiocarbon dating suggestions that the most recent eruption occurred between 1480 and 1600. The oldest exposed flows are 1.1 million years old, though geologists think the shield volcano began building itself up about two million years ago.
Haleakalā National Park was created on August 1, 1916, as part of Hawaii National Park. At that time, the park also included Kilauea and Mauna Loa. However, in 1961, the volcanoes of Hawaii and Maui were separated into different parks. The name Haleakalā is Hawaiian for “House of the Sun.” In Hawaiian mythology, a god named Maui climbed the mountain and lassoed the Sun’s rays to lengthen the day.
Our photo from STS-80 shows the lower tip of the Sinai Peninsula in Egypt. Mt.Sinai is just to the right of upper center amid a welter of crustal faults. Mount Sinai is a 2,285-metre (7,497 ft) moderately high mountain near the city of Saint Catherine in the Sinai region. It is next to Mount Catherine (at 2,629 m or 8,625 ft, the highest peak in Egypt). It is surrounded on all sides by higher peaks of the mountain range. (Wiki) North is at top right.
From NASA’s caption: Low sun angle and excellent focus reveal details of three prominent sets of faults and fractures (and subordinate ones) in the 500-600-million-year-old bedrock of the Sinai Peninsula. Displacement as great as 4000 m is documented on faults in the southwest. Younger, more northerly faults crosscut those of northeasterly and northwesterly trend; the younger faults reflect a change in the direction of extension in the Red Sea rift from NE (55 degrees) at ~25 million years ago to almost N (10-20 degrees) at present.
When our two spacewalks were cancelled on STS-80 due to a jammed hatch, we were at least partially compensated with two loosely scheduled days in our flight plan. We took full advantage of our Earth viewing opportunities and captured scenes like the one above. “Serenity” would be a good adjective for the feeling evoked by memories of this view.
NASA’s caption reads: STS080-759-075 (19 Nov.-7 Dec. 1996) — This 70mm handheld camera’s panoramic view was photographed by the STS-80 crewmembers to capture the aesthetic side of space travel. The scene was in the South Pacific Ocean southwest of Hawaii and west of Christmas Island. The viewing angle from the space shuttle Columbia and the sunglint phenomenon gives the picture an almost three-dimensional effect.
Our nearly 18 days in space gave us a chance to watch the moon cycle through over half its orbit around Earth. From the flight deck windows, the moon to us seemed close enough to touch. I think we will finally see Americans and our partners return to the moon’s surface within a decade, perhaps by 2027.
NASA caption: STS080-759-038 (19 Nov.-7 Dec. 1996) — As photographed by the crewmembers aboard the space shuttle Columbia, a full moon is about to set beyond the limb of Earth. A full moon should be round but when it is near the limb, or edge of Earth, the atmosphere tends to distort the shape. The atmosphere, stratosphere, ionosphere is in reality acting as a lens, thus the distorted shape of the Moon. As the Moon reaches the Earth’s horizon it will become “egg shaped”.
Our STS-80 crew obtained this photo of the Nile Valley and the Egyptian capital of Cairo, at bottom center. The arrow I’ve added points to the small, lighter patch of desert where the three great pyramids of Giza are located. Cairo is the gray urban area stretching right across the Nile flood plain to the main river channel. I can recall searching diligently for the pyramids with my telephoto lens, but never being quite sure I’d nailed them. If you zoom in on this digital image, you can make out the shadows of the two largest pyramids, those of Khufu and Khafre. ISS crews today get much better photos with their digital cameras and 80mm zoom lenses. This shot was taken on 35mm film with a 400mm lens.
NASA captions: The Great Pyramids at Giza are the last of the Seven Wonders of the Ancient World and perhaps the most famous of the ancient monuments in the Nile River Delta of Egypt. They are also a favorite subject of photography from orbit. It is a short distance between the glories of ancient Egypt and the modern Cairo metropolitan area to the north and east. The buildings and streets of El Giza provide stark contrast to the bare rock and soil of the adjacent desert.
Giza is a royal burial place, commissioned and built by pharaohs during the fourth dynasty around 2550 BC. Started by Khufu, continued by his son Khafre (Khafre pyramid and the Sphinx), and later by his son, Menkaure, the complex also includes many tombs and temples for queens, other members of royal families, and royal attendants.
Today, Giza is a rapidly growing region of Cairo. Population growth in Egypt continues to soar, leading to new construction. New roads for large new developments are obvious in the desert hills northwest and southwest of the pyramids. Documenting patterns of urban growth around the world is a prime science objective for astronaut photography, now from the Space Station.
Leave a Reply