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

Continue reading

More Spectacular Images from the MUOS-4 Launch

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

Continue reading

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

Continue reading

A Fiery End for Kosmos 1315 Over Hawaii

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

Continue reading

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

Continue reading

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

Continue reading

Watch the Moon Occult Aldebaran This Weekend

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

Continue reading

What Did We Learn About Pluto?

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

Continue reading

NASA Tests Orion's Fate During Parachute Failure Scenario

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

Continue reading

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

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

Continue reading

The Dwarf Planet Orcus

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

Continue reading

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

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

Continue reading

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

Continue reading

August Full Moon Anticipates September's Total Lunar Eclipse

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

Continue reading

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.

Continue reading

Are Martian Dust Storms Dangerous?

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

Continue reading

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.

Continue reading

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

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

Continue reading

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

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

Continue reading

Ice Giants at Opposition

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

Continue reading

The Planet Jupiter

By Matthew Williams - August 25, 2015 12:00 PM UTC | Planetary Science

Jupiter is the 5th planet in the Solar System, and the largest by far, easily visible in the night sky without a telescope.

Continue reading

How Do Stars Go Rogue?

By Fraser Cain - August 24, 2015 12:18 PM UTC | Stars

Continue reading

Carnival of Space #420

By susie - August 24, 2015 12:10 PM UTC | Site News

Continue reading

Astro-Challenge: Splitting 44 Boötis

By David Dickinson - August 24, 2015 11:48 AM UTC | Stars

Continue reading

'One Direction' Heads to Space in new NASA Themed Music Video - 'Drag Me Down'

By ken-kremer - August 23, 2015 10:36 PM UTC | Site News

Continue reading

What is the Asteroid Belt?

By Matthew Williams - August 23, 2015 09:00 AM UTC | Planetary Science

Continue reading

Danny - First Atlantic Hurricane of 2015 as Seen from Space Station by Scott Kelly

By ken-kremer - August 22, 2015 01:21 AM UTC | Planetary Science

Continue reading

Tricks to Remember the Planets

By Nancy Atkinson - August 21, 2015 12:23 PM UTC | Planetary Science

Continue reading

Curiosity Snaps Stunning One of a Kind Belly Selfie At Buckskin Mountain Base Drill Site

By ken-kremer - August 20, 2015 10:42 PM UTC | Planetary Science

Continue reading

How to Find Rosetta's Comet In Your Telescope

By bob-king - August 20, 2015 03:58 PM UTC | Observing

Continue reading

NASA Invites Public to 'Send Your Name to Mars' on InSight - Next Red Planet Lander

By ken-kremer - August 19, 2015 10:50 PM UTC | Space Exploration

Continue reading

Cassini's Farewell Look at Dione

By David Dickinson - August 19, 2015 02:22 PM UTC | Planetary Science

Continue reading

Watch the You-Know-What Out Of This New Trailer for The Martian

By jmajor - August 19, 2015 12:00 PM UTC | Planetary Science

Continue reading

The Dwarf Planet (and Plutoid) Makemake

By Matthew Williams - August 19, 2015 12:00 PM UTC | Planetary Science

Continue reading

Watch HTV-5 Chase the International Space Station From Your Backyard

By David Dickinson - August 19, 2015 08:43 AM UTC | Space Exploration

Continue reading

More Evidence That Comets May Have Brought Life to Earth

By Nancy Atkinson - August 18, 2015 10:48 PM UTC | Astrobiology

Continue reading

What is the Earth's Average Temperature?

By Matthew Williams - August 18, 2015 03:30 PM UTC | Planetary Science

Continue reading

Late Summer Tales of Tanabata

By David Dickinson - August 18, 2015 01:50 PM UTC | Site News

Continue reading

Indian Mars Orbiter Shoots Spectacular New Images of Sheer Canyon and Curiosity's Crater

By ken-kremer - August 17, 2015 05:42 PM UTC | Planetary Science

Continue reading

What Is A Dwarf Planet?

By Matthew Williams - August 17, 2015 04:55 PM UTC | Planetary Science

Continue reading

Spectacular Celestial Fireworks Commemorate Perihelion Passage of Rosetta's Comet

By ken-kremer - August 16, 2015 03:48 PM UTC | Planetary Science

Continue reading

Ride Along with New Horizons on its Pluto Flyby

By jmajor - August 14, 2015 04:17 PM UTC | Planetary Science

Continue reading

Carnival of Space #418

By susie - August 14, 2015 01:08 PM UTC | Site News

Continue reading

Milestone Test Firing of NASA's SLS Monster Rocket Engine Advances Human Path to Deep Space

By ken-kremer - August 13, 2015 11:20 PM UTC | Space Exploration

Continue reading

The Dwarf Planet Haumea

By Matthew Williams - August 13, 2015 12:00 PM UTC | Planetary Science

Continue reading

Why is it Tough to Land on a Comet?

By Fraser Cain - August 13, 2015 06:42 AM UTC | Planetary Science

Continue reading

Cygnus Freighter Arrives at Kennedy as Orbital ATK Ramps Up Station Resupply Recovery Efforts via Atlas V

By ken-kremer - August 12, 2015 10:22 PM UTC | Space Exploration

Continue reading

What's Coming After Hubble and James Webb? The High-Definition Space Telescope

By ramin-skibba - August 12, 2015 07:43 PM UTC | Telescopes

Continue reading

Gallery: 2015 Perseids Are Putting on a Show

By Nancy Atkinson - August 12, 2015 04:17 PM UTC | Observing

Continue reading

Revealed: Mars to Appear Larger Than a Full Moon!

By David Dickinson - August 12, 2015 02:53 PM UTC | Planetary Science

Continue reading