Galactic Lensing to the rescue!
#chandra
#chandra
NASA's Chandra X-ray Observatory originally shared:
Tour of RX J1131-1231
Astronomers have directly measured the spin of a supermassive black hole in a quasar that is located 6 billion light years away.
http://chandra.harvard.edu/photo/2014/rxj1131/
http://chandra.harvard.edu/resources/podcasts/sd.html
Astronomers have directly measured the spin of a supermassive black hole in a quasar that is located 6 billion light years away.
http://chandra.harvard.edu/photo/2014/rxj1131/
http://chandra.harvard.edu/resources/podcasts/sd.html
Zazzle Space Gifts for young and old alike
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