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 ...

John Glenn the First American to Orbit Earth

John Glenn the First American to Orbit Earth

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Cosmic Epic Unfolds in Infrared (Eagle Nebula)

Cosmic Epic Unfolds in Infrared (Eagle Nebula)

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Infant Stars Run Wild in Orion Nursery

Infant Stars Run Wild in Orion Nursery

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The Pleiades Star Cluster (Messier 45)

The Pleiades Star Cluster (Messier 45)

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Mercury's Horizon Image from Messenger Spacecraft

Mercury's Horizon Image from Messenger Spacecraft

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NASA Space Shuttle Discovery Is Ready for Launch

NASA Space Shuttle Discovery Is Ready for Launch

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Seven Sisters Pleiades Star Cluster (M45)

Seven Sisters Pleiades Star Cluster (M45)

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NASA - Eta Carinae, Doomed Star

NASA - Eta Carinae, Doomed Star

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City of Seoul (Hanyang), South Korea

City of Seoul (Hanyang), South Korea

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Spider Crater, Kimberley, Western Australia

Spider Crater, Kimberley, Western Australia

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The Eagle Nebula Star Cluster (Messier 16)

The Eagle Nebula Star Cluster (Messier 16)

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Nardo Ring, Italy - Race Car Test Track

Nardo Ring, Italy - Race Car Test Track

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Huygens Probe and Titan

Huygens Probe and Titan

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NASA - Cleveland Volcano, Aleutian Islands

NASA - Cleveland Volcano, Aleutian Islands

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Horsehead Nebula Region (Barnard 33)

Horsehead Nebula Region (Barnard 33)

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