 |  German instrument GREAT begins its scientific observations on board SOFIA
 7 April 2011
On 6 April 2011, German scientists carried out their first astronomical observations on board the Stratospheric Observatory for Infrared Astronomy, SOFIA. A joint project between NASA and the German Aerospace Center (DLR), SOFIA is the world’s only operational airborne observatory. The first observations with the German Receiver for Astronomy at Terahertz Frequencies, GREAT, included spectra of the Omega Nebula (M17) an active star-forming region in the Milky Way, and the galaxy IC 342, located a few million light years away.
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