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Time History of Events and Macroscale Interactions during Substorms (THEMIS)/ARTEMIS
Time History of Events and Macroscale Interactions during Substorms (THEMIS)/ARTEMIS

THEMIS consists of five small satellites which carry identical suites of electric, magnetic, and particle detectors that study the colorful…

Van Allen Probes
Van Allen Probes

The twin Van Allen Probes study the Van Allen radiation belts and discriminate between proposed energetic particle acceleration, transport, and…

America’s Next Rocket
America’s Next Rocket

NASA’s Space Launch System, or SLS, will be the most powerful rocket in history. The flexible, evolvable design of this…

America’s Next Rocket
America’s Next Rocket

NASA’s Space Launch System, or SLS, will be the most powerful rocket in history. The flexible, evolvable design of this…

Lear-24
Lear-24

NASA’s Lear 24 was modified as an airborne test aircraft, but on June 7, 2001, it was involved in a…

Where’s STEREO — July 2014
Where’s STEREO — July 2014

Graphic showing the approximate positions for the STEREO spacecrafts for July 2014.