The (Possible) Dwarf Planet 2007 OR10

By Matthew Williams - September 02, 2015 10:38 PM UTC | Planetary Science

Within the Kuiper Belt lies the possible dwarf planet 2007 OR10, one of many objects that has forced astronomers to rethink the way they classify planets

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More Spectacular Images from the MUOS-4 Launch

By Nancy Atkinson - September 02, 2015 04:30 PM UTC | Space Exploration

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Atlas V Launch of Navy's Revolutionary MUOS-4 Tactical Comsat Produces Exotic Skyshow

By ken-kremer - September 02, 2015 03:53 PM UTC | Space Exploration

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A Fiery End for Kosmos 1315 Over Hawaii

By David Dickinson - September 02, 2015 10:41 AM UTC | Space Exploration

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Thierry Legault Meets His Own Challenge: Image an ISS Transit of a Solar Prominence

By Nancy Atkinson - September 01, 2015 03:50 PM UTC | Solar Astronomy

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Tropical Storm Erika Delayed Blastoff for US Navy set for Sept. 2 on Most Powerful Atlas V Rocket: Watch Live

By ken-kremer - September 01, 2015 01:04 PM UTC | Space Exploration

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Watch the Moon Occult Aldebaran This Weekend

By David Dickinson - September 01, 2015 09:16 AM UTC | Observing

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What Did We Learn About Pluto?

By Fraser Cain - August 31, 2015 02:34 PM UTC | Planetary Science

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NASA Tests Orion's Fate During Parachute Failure Scenario

By ken-kremer - August 30, 2015 03:22 PM UTC | Space Exploration

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Eclipse By Fire! Smoky Haze Pervades Night Sky, Darkens Moon

By bob-king - August 30, 2015 12:15 PM UTC | Solar Astronomy

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The Dwarf Planet Orcus

By Matthew Williams - August 29, 2015 07:40 PM UTC | Planetary Science

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Watch Where You Point That 'Scope: Police Mistake Telescope for a Gun

By Nancy Atkinson - August 29, 2015 02:02 PM UTC | Observing

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NASA and New Horizons team pick post-Pluto target ... and serve up an awesome video

By Alan Boyle - August 28, 2015 08:34 PM UTC | Missions

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August Full Moon Anticipates September's Total Lunar Eclipse

By bob-king - August 28, 2015 11:35 AM UTC | Solar Astronomy

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The Planet Uranus

By Matthew Williams - August 27, 2015 12:00 PM UTC | Planetary Science

The gas giant Uranus is the third largest planet in our Solar System, has many moons, a ring system, and composed of gases and ices.

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Are Martian Dust Storms Dangerous?

By Fraser Cain - August 27, 2015 11:27 AM UTC | Planetary Science

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The Dwarf Planet Quaoar

By Matthew Williams - August 27, 2015 09:00 AM UTC | Planetary Science

Quaoar, a dwarf planet that orbits within the Kuiper Belt, was discovered in 2002 by astronomers from Caltech. Like the discovery of Eris, its existence has added to the classification debate.

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Orbital ATK on the Rebound With Antares Return to Flight in 2016

By ken-kremer - August 27, 2015 08:35 AM UTC | Space Exploration

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Ceres' "Pyramid" Gets a Closer Look, But Bright Spots Remain a Mystery

By Nancy Atkinson - August 26, 2015 06:24 PM UTC | Planetary Science

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Ice Giants at Opposition

By David Dickinson - August 26, 2015 01:27 PM UTC | Planetary Science

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