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Rub’ al Khali, Arabia
Rub’ al Khali, Arabia

The Rub' al Khali is one of the largest sand deserts in the world, encompassing most of the southern third…

APOD: 2008 October 20 – Moons, Rings, and Unexpected Colors on Saturn
APOD: 2008 October 20 – Moons, Rings, and Unexpected Colors on Saturn

APOD Science APOD APOD: 2008 October 20 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss  …

APOD: 2008 October 19 – In the Center of the Lagoon Nebula
APOD: 2008 October 19 – In the Center of the Lagoon Nebula

APOD Science APOD APOD: 2008 October 19 – In… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss…

APOD: 2008 October 18 – Sharpless 171
APOD: 2008 October 18 – Sharpless 171

APOD Science APOD APOD: 2008 October… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss   APOD Astronomy…

NASA Reinstalls Main Mirror in SOFIA Airborne Observatory
NASA Reinstalls Main Mirror in SOFIA Airborne Observatory

Engineers and technicians from NASA, the German Space Agency and the Deutsches SOFIA Institut recently reinstalled the German-built primary mirror…

NASA Reinstalls Main Mirror in SOFIA Airborne Observatory
NASA Reinstalls Main Mirror in SOFIA Airborne Observatory

SOFIA's primary mirror assembly is lifted above wing level prior to its reinstallation in the telescope cavity of NASA's 747…

Doomed Moon of Mars
Doomed Moon of Mars

This moon is doomed. Mars, named for the Roman god of war, has two tiny moons-Phobos and Deimos-whose names are…

APOD: 2008 October 17 – An Extraordinary Voyage
APOD: 2008 October 17 – An Extraordinary Voyage

APOD Science APOD APOD: 2008 October 17 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss  …

Newly Coated SOFIA Mirror Assembly Returns for Reinstallation
Newly Coated SOFIA Mirror Assembly Returns for Reinstallation

Safely protected in its shipping crate, the telescope mirror assembly for NASA's Stratospheric Observatory for Infrared Astronomy, or SOFIA, is…

Layered Deposits on the North Pole of Mars
Layered Deposits on the North Pole of Mars

This striking image of a mound within the area of a trough cutting into Mars' north polar layered deposits was…