The space telescope was launched in May last year on a mission to survey the "cosmic microwave background" – ancient light left over from the big bang.
The bright streak across the middle of the picture is our own galaxy, the Milky Way, viewed edge-on. The intense light comes not from stars but from the radiation released by the dust and gas clouds that stretch between them. [The Guardian U.K. 4 July 2010 text and photograph]
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