An artist’s conception of one of the THEMIS spacecraft in orbit around Earth.
In additional to the five THEMIS spacecraft launched into space, 20 THEMIS ground stations can observe aurora from the ground.
In this image taken on Jan. 25, 2012, the Aurora Borealis steals the scene in this nighttime photograph shot from…
Craters appear well defined on icy Rhea in front of the hazy orb of the much larger moon Titan in…
Craters appear well defined on icy Rhea in front of the hazy orb of the much larger moon Titan in…
NASA Administrator Charles Bolden responds to a reporter’s question during an overview briefing on NASA’s fiscal year 2013 budget, Monday,…
