Space

In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Data indicates that the majority of the mass-energy in the observable Universe ...

Apollo 11 Lunar Module Eagle in Lunar Orbit

Apollo 11 Lunar Module Eagle in Lunar Orbit

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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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NASA - Space Shuttle Challenger Astronaut McCandles

NASA - Space Shuttle Challenger Astronaut McCandles

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Space Shuttle Endeavour Launch

Space Shuttle Endeavour Launch

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The Pleiades Star Cluster (Messier 45)

The Pleiades Star Cluster (Messier 45)

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NASA Space Shuttle Discovery Is Ready for Launch

NASA Space Shuttle Discovery Is Ready for Launch

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Space Station Mir over Earth

Space Station Mir over Earth

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NASA - The Cone Nebula and NGC 2264

NASA - The Cone Nebula and NGC 2264

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U.S. Flag on Moon (Apollo 11)

U.S. Flag on Moon (Apollo 11)

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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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Phoebe - Comet Moon of Saturn

Phoebe - Comet Moon of Saturn

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Washington from International Space Station

Washington from International Space Station

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