Space

Outer space, or just space, is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, ...

NASA - Rosette Nebula, NGC 2237

NASA - Rosette Nebula, NGC 2237

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Phoenix on the Red Planet, Artist's Concept

Phoenix on the Red Planet, Artist's Concept

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Massive Stars in Open Cluster Pismis 24

Massive Stars in Open Cluster Pismis 24

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Space Station Mir over Earth

Space Station Mir over Earth

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Light Echoes from a Red Supergiant V838

Light Echoes from a Red Supergiant V838

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