![]() NASA / JPL / MSSS
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Curiosity Finds Ancient Streambed on Mars
September 28, 2012 | NASA’s newest rover has found strong evidence near its landing site inside Gale crater that vigorous steams of liquid water once flowed across the Martian surface. > read more
Much Ado at Mars
September 24, 2012 | It’s a great time to be a Red Planet researcher. Right now three orbiters and two rovers — including the increasingly mobile Curiosity — are checking out Earth’s planetary neighbor from very close range. > read more
Hubble Goes Deep — eXtremely Deep
September 26, 2012 | The Hubble Space Telescope’s newest deep space image reveals 5,500 galaxies in a tiny, dark patch of sky in the constellation Fornax. > read more
A Black Hole in Orion?
September 26, 2012 | The Orion Nebula Cluster might be home to a black hole more than 100 times the mass of the Sun, according to a recent simulation. > read more
Pluto’s Fake Moon
September 25, 2012 | Astronomers think a small body in the Kuiper Belt might be temporarily spiraling around Pluto — well, that’s what it would look like if you were standing on Pluto, anyway. > read more
Astronomers Approach Black Hole
September 27, 2012 | The Event Horizon Telescope team has unmasked the heart of the jet-shooting galaxy M87, paving the way for astronomers to discover how black holes create their superpowered streamers. > read more
![]() NASA / JPL
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A “Dream Comet” Heading Our Way?
September 27, 2012 | Veteran skywatchers are trying to contain their enthusiasm for a new find that, late next year, could become the brightest comet in decades. > read more
Tour September’s Sky by Eye and Ear!
August 31, 2012 | Some of this month’s sky sights are low down along the horizon: Saturn and Mars in the west after sunset, the first-quarter Moon in the south, and Jupiter when it rises around midnight in the east. > read more
Uranus’s Rare Close Encounter
September 18, 2012 | The planet Uranus is spectacularly close to an almost identically bright star throughout late September. > read more
![]() Sky & Telescope diagram
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This Week’s Sky at a Glance
September 28, 2012 | The Harvest Moon wanes from full almost down to last quarter this week, stepping past the Pleiades, Aldebaran, and Jupiter along the way. > read more
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