Image Caption: The fully integrated spacecraft and science instrument for NASA’s Interface Region Imaging Spectrograph (IRIS) mission is seen in a clean room at the Lockheed Martin Space Systems Sunnyvale, Calif. facility. The solar arrays are deployed in the configuration they will assume when in orbit. Credit: Lockheed Martin

NASA’s IRIS Spacecraft Has Been Fully Integrated And Final Testing Has Begun

January 19, 2013

NASA

NASA’s next Small Explorer (SMEX) mission to study the little-understood lower levels of the sun’s atmosphere has been fully integrated and final testing is underway.

Scheduled to launch in April 2013, the Interface Region Imaging Spectrograph (IRIS) will make use of high-resolution images, data and advanced computer models to unravel how matter, light, and energy move from the sun’s 6,000 K (10,240 F / 5,727 C) surface to its million K (1.8 million F / 999,700 C) outer atmosphere, the corona. Such movement ultimately heats the sun’s atmosphere to temperatures much hotter than the surface, and also powers solar flares and coronal mass ejections, which can have societal and economic impacts on Earth.

“This is the first time we’ll be directly observing this region since the 1970s,” says Joe Davila, IRIS project scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md. “We’re excited to bring this new set of observations to bear on the continued question of how the corona gets so hot.”

Read more: IRIS Spacecraft Is Fully Integrated, Ready For Testing – Space News – redOrbit.

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