Artwork courtesy of Chandra X-ray Observatory
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Massive Galaxy Cluster Finally Acts as Predicted
August 15, 2012 | Astronomers have discovered a supermassive galaxy cluster that both meets and challenges expectations for how clusters ought to behave. > read more
Poll Results: Mount Sharp or Aeolis Mons?
August 14, 2012 | Scientists associated with the Curiosity mission have two names for the towering peak inside Gale crater. SkyandTelescope.com readers told us which one they liked best. > read more
Milky Way’s Black Hole Once Active
August 17, 2012 | Evidence continues to mount that our galaxy’s supermassive black hole was not always the quiet neighbor it is now. > read more
Fly Through a 3D Map of the Universe
August 13, 2012 | A mind-boggling 1.5 million galaxies trace out the filaments, clusters, and voids in Sloan Digital Sky Survey’s new 3D map of the universe. > read more
S&T: Lauren Darby
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Tour August’s Sky by Eye and Ear!
June 22, 2012 | Mark your calendars for the night of Saturday, August 11th, when the Perseid meteor shower will peak. Stay up late to catch the risings of Jupiter and Venus, or just enjoy Mars and Saturn low in the evening twilight. > read more
Sky & Telescope diagram
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This Week’s Sky at a Glance
August 17, 2012 | The Saturn-Spica-Mars triangle is lengthening again. Venus is a darkest-hour UFO. And as the season turns, the Dipper descends as Cassiopeia rises; their balance is tipping. > read more
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