Satellites Launch on Substorm Mission

Space & Earth science / Space Exploration

A Delta II rocket heads for orbit after lifting off from the Cape Canaveral Air Force Station in Cape Canaveral, Fla. Saturday, Feb.17, 2007. The rocket is carrying the THEMIS (Time and History of Events and Macroscale Interactions During Substorms) payload. (AP Photo/Peter Cosgrove)

(AP) -- Five science satellites blasted off on a single rocket into a golden sunset Saturday on a mission to figure out the source of powerful geomagnetic substorms in the Earth's atmosphere.

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