STS-084 Earth Sciences and Image Analysis Photographic Highlights

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View larger image for STS084-310-36
STS084-310-36
Pyramids, Egypt: The only remaining wonder of the ancient list of seven is the Pyramids, seen close to the city of Cairo in this STS-84 photo.
View larger image for STS084-389-24
STS084-389-24
Comet Hale-Bopp: Comet Hale-Bopp as seen by the STS-84 crew from orbit. Although the Earth was in no danger of being impacted by Hale-Bopp (this time!) it serves as a reminder that all planets in our solar system are vulnerable. The mass extinction at the Cretaceous-Tertiary boundary (65 million years ago) might have been caused by an impact from a comet or asteriod with a possible diameter of 10 km.
View larger image for STS084-731-85
STS084-731-85
Grand Caicos, Bahamas: Grand Caicos, Bahamas. Land areas, shallow banks and reefs, and deep water present striking color differences. A small blue dot on the inner edge of a bank near land, marks a "blue hole". These are sinkholes formed in the limestone bank during the past glacial age, when sea level was as much as 100 meters below today's. Now the sinkhole is submerged under salt water, providing a wonderful playground for scuba divers and biologists.
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