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 ...

Cosmic Epic Unfolds in Infrared (Eagle Nebula)

Cosmic Epic Unfolds in Infrared (Eagle Nebula)

1600x1200, 385K

NASA - Cartwheel Galaxy, Head-On Collision

NASA - Cartwheel Galaxy, Head-On Collision

1024x768, 78K

Phoebe - Comet Moon of Saturn

Phoebe - Comet Moon of Saturn

1440x900, 132K

Washington from International Space Station

Washington from International Space Station

1600x1200, 511K

Santa Ana Volcano Erupts in El Salvador

Santa Ana Volcano Erupts in El Salvador

1920x1200, 479K

ISS Backdropped by Space and Earth

ISS Backdropped by Space and Earth

1600x1200, 464K

The Eagle Nebula Star Cluster (Messier 16)

The Eagle Nebula Star Cluster (Messier 16)

1600x1200, 235K

NASA - Noctis Labyrinthus Formation on Mars

NASA - Noctis Labyrinthus Formation on Mars

1600x1200, 216K

Alien World, Gas-Giant Exoplanet Space Art

Alien World, Gas-Giant Exoplanet Space Art

1600x1200, 344K

Dust and the Helix Nebula (NGC 7293)

Dust and the Helix Nebula (NGC 7293)

1600x1200, 331K

Edinburgh, Scotland - Athens of the North

Edinburgh, Scotland - Athens of the North

1600x1200, 350K

Purple Haze in Abell 1689, Massive Cluster of Galaxies

Purple Haze in Abell 1689, Massive Cluster of Galaxies

1600x1200, 341K

Andromeda's Galaxy Active Core

Andromeda's Galaxy Active Core

1600x1200, 478K

Stellar Jewel Box - Giant Nebula NGC 3603

Stellar Jewel Box - Giant Nebula NGC 3603

1600x1200, 281K

Apollo 11 Lunar Module Eagle in Lunar Orbit

Apollo 11 Lunar Module Eagle in Lunar Orbit

1920x1200, 266K