NASA - National Aeronautics and Space Administration

How to Explore Something Enormous and Mostly Invisible: Part 1

Build and Deploy a Fleet of Spacecraft

How to Explore Something Enormous and Mostly Invisible: Part 2

Create a Continent-spanning Observatory Network on the Ground

THEMIS Arrives in Florida for Launch Preparations

THEMIS/AIM Science Writer's Workshop

The THEMIS mission plans to unravel the tantalizing mystery behind auroral substorms, an avalanche of magnetic energy powered by the solar wind that intensifies the northern and southern lights.

Spring is Aurora Season

03.04.08 - For reasons not fully understood, auroras are more common in the spring than at other times. The five-craft THEMIS fleet may help scientists determine why.

NASA Spacecraft Make New Discoveries About Northern Lights

THEMIS has made three important discoveries about spectacular eruptions of Northern Lights called "substorms" and the source of their power.

THEMIS Status - July 16, 2007

07.16.07 - Status report on the THEMIS spacecraft as of July 16, 2007.

NASA's THEMIS Mission Launched to Study Geomagnetic Substorms

02.17.07 - NASA's Time History of Events and Macroscale Interactions during Substorms mission successfully launched Saturday, Feb. 17 at 6:01 p.m. EST from Pad 17-B at Cape Canaveral.

Launch of THEMIS Postponed 24 Hours

02.16.07 - The launch of NASA's THEMIS spacecraft aboard a Delta II rocket was scrubbed tonight six minutes before launch due to out-of-limit upper level winds.