+ Mars has some serious snowstorms at night
+ Scientists find that the stars in the Pleiades are variable
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9/1/2017 ↗ View Online
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This Week's News
Mars has some serious snowstorms at night
Mars has some serious snowstorms at night
A new study shows what happens in Mars' atmosphere when the Sun sets.
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Reserve Atlas of the Stars Today

Astronomers have just mapped the surface of Antares
Astronomers have just mapped the surface of Antares
This is our best yet image of a star that's not the Sun.
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Scientists find that the stars in the Pleiades are variable
Scientists find that the stars in the Pleiades are variable
A new algorithm can change the way Kepler measures brightness.
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Astronomers recover a lost nova
Astronomers recover a lost nova
First observed 600 years ago, this binary system is providing vital clues to how novae work.
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A tale of two eclipses
A tale of two eclipses
A past Astronomy contributor compares his eclipse experiences.
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Interactive StarDome
This online program allows users to look at the sky at any time and from any location on Earth, seeing what stars and planets are visible during any time of the night.
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Images from the Great American Eclipse
Local Group
Images from the Great American Eclipse
By the morning after the big event, images had already started coming in. Here are a few of the early birds.
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Multimedia
Episode 9: Abraham "Avi" Loeb
5 Questions with David J Eicher
Episode 9:
Abraham "Avi" Loeb
David J. Eicher sits down with Harvard University Astronomy Department Chair Abraham "Avi" Loeb to discuss Loeb's work with galaxies, Breakthrough Starshot Initiative, and more!
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Episode 8: Alfred McEwen
5 Questions with David J Eicher
Episode 8:
Alfred McEwen
Dave Eicher sits down with Alfred McEwen, professor of planetary geology at the University of Arizona, to discuss planetary missions over the years.

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Philosophy of Science
The Real Reality Show
Philosophy of Science

Scientists think a little differently than most people in their quest to put together a realistic, accurate picture of the universe and how it works. Do you think like a scientist? Can you handle the truth?
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The Milky Way Makes Extreme Particles
The Real Reality Show
The Milky Way Makes Extreme Particles
Located in Namibia, the HESS telescope array is detecting gamma rays from the center of our galaxy. Find out what mysterious source might be generating these high-energy particles.
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Reader Gallery
Earth shadow and moonrise from 35000 feet
Picture of the Day
Earth shadow and moonrise from 35000 feet
Nicholas Clarke from Milton Keynes, England.
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Venus rising
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Venus rising
Chan Chee Guan from Malaysia.
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NGC 6559 and surroundings
Picture of the Day
NGC 6559 and surroundings
Chuck Manges from Hooversville, Pennsylvania.
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