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 ...

Boomerang Nebula (Bow Tie), Centaurus Constellation

Boomerang Nebula (Bow Tie), Centaurus Constellation

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NASA - Earth And Its Moon, Space Shuttle Discovery, 1998

NASA - Earth And Its Moon, Space Shuttle Discovery, 1998

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NASA - Space Station Alpha

NASA - Space Station Alpha

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Columbia STS-50 Orbiter Vehicle Liftoff

Columbia STS-50 Orbiter Vehicle Liftoff

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Space Shuttle Atlantis Atop NASA's Modified Boeing 747

Space Shuttle Atlantis Atop NASA's Modified Boeing 747

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Space Shuttle Endeavour Launch

Space Shuttle Endeavour Launch

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Rocky Mesas of Nilosyrtis Mensae, Mars

Rocky Mesas of Nilosyrtis Mensae, Mars

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Sculpting a Galaxy in Orion Nebula (M42)

Sculpting a Galaxy in Orion Nebula (M42)

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Space Station Mir over Earth

Space Station Mir over Earth

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Landing STS-26, Shuttle Discovery, October 3, 1988

Landing STS-26, Shuttle Discovery, October 3, 1988

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Extraterrestrial Fireworks, Small Magellanic Cloud

Extraterrestrial Fireworks, Small Magellanic Cloud

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Jupiter's Great Red Spot, 1979, Voyager 1

Jupiter's Great Red Spot, 1979, Voyager 1

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Tornado Track Across Indiana and Kentucky

Tornado Track Across Indiana and Kentucky

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Space Shuttle Discovery on the Tarmac

Space Shuttle Discovery on the Tarmac

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Washington from International Space Station

Washington from International Space Station

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