Image of the Day: quasar-illuminated gas blob
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Image of the Day: quasar-illuminated gas blob
A mysterious green blob of gas known as Hanny's Voorwerp (that's Hanny's Object in Dutch) was captured by the Hubble Space Telescope. What we can see is all that remains of a 300,000-light-year-long streamer of gas floating near neighboring galaxy, IC 2947. Hanny's Voorwerp was made visible by a quasar, which may have turned off as long as 200,000 years ago.
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