Space

Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental ...

A Clear View of the Alps and Apennines from Space

A Clear View of the Alps and Apennines from Space

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Colorado's Red Rocks and Dinosaur Ridge

Colorado's Red Rocks and Dinosaur Ridge

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Horsehead Nebula Region (Barnard 33)

Horsehead Nebula Region (Barnard 33)

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The Fairy of M16 Eagle Nebula in Infrared

The Fairy of M16 Eagle Nebula in Infrared

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Jack Hills of Australia's Narre Gneiss Terrane

Jack Hills of Australia's Narre Gneiss Terrane

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Omega Centauri (NGC 5139) from Hubble Space Telescope

Omega Centauri (NGC 5139) from Hubble Space Telescope

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ISS Expedition 20 Crew Lands in Kazakhstan

ISS Expedition 20 Crew Lands in Kazakhstan

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ISS over Canadian province Quebec

ISS over Canadian province Quebec

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Boomerang Nebula (Bow Tie), Centaurus Constellation

Boomerang Nebula (Bow Tie), Centaurus Constellation

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Sondrestrom Glacier in Greenland by Air

Sondrestrom Glacier in Greenland by Air

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NASA - Earth From Apollo

NASA - Earth From Apollo

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Mariner 2 Spacecraft (Mariner-Venus 1962)

Mariner 2 Spacecraft (Mariner-Venus 1962)

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Space Station Mir over Earth

Space Station Mir over Earth

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Double-Star System Z Camelopardalis (Z Cam)

Double-Star System Z Camelopardalis (Z Cam)

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The Most Crowded Collision of Galaxy Clusters

The Most Crowded Collision of Galaxy Clusters

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