What is a Waning Moon?

By Matthew Williams - October 29, 2008 04:13 PM UTC | Planetary Science

Between a Full Moon and a New Moon, Earth's only satellite experiences a period of "waning", where the amount that is visible slowly decreases.

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Quarter Moon

By Fraser Cain - October 29, 2008 03:34 PM UTC | Planetary Science

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Where In The Universe Challenge #27

By Nancy Atkinson - October 29, 2008 02:40 PM UTC | Observing

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More Mercury from MESSENGER

By Nancy Atkinson - October 29, 2008 02:16 PM UTC | Planetary Science

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Does the Moon Orbit the Sun?

By Fraser Cain - October 29, 2008 01:13 PM UTC | Planetary Science

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How to Prepare for Your Own Personal Spaceflight or Zero-G Experience

By Nancy Atkinson - October 29, 2008 11:53 AM UTC | Space Exploration

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Engineers Begin Shutting Down Phoenix Lander Instruments

By Nancy Atkinson - October 28, 2008 06:54 PM UTC | Planetary Science

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New Moon

By Fraser Cain - October 28, 2008 05:36 PM UTC | Planetary Science

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More Ares I Development Problems: Is it Really That Bad?

By ian - October 28, 2008 02:49 PM UTC | Space Policy

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Precious Gems Discovered on Mars

By Nancy Atkinson - October 28, 2008 01:53 PM UTC | Planetary Science

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Driving on the Moon in Your Shirtsleeves

By Nancy Atkinson - October 28, 2008 09:02 AM UTC | Planetary Science

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Hawking to Retire, But Not Quit

By Nancy Atkinson - October 27, 2008 06:58 PM UTC | Physics

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Podcast: Death From the Skies, Interview with Phil Plait

By astronomycast - October 27, 2008 02:23 PM UTC | Planetary Science

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Podcast: Relativity, Relativity and More Relativity

By astronomycast - October 27, 2008 02:07 PM UTC | Physics

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Giveaway: When We Left Earth DVD

By Fraser Cain - October 27, 2008 01:59 PM UTC | Space Exploration

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Universe Today is Banned from Digg

By Fraser Cain - October 27, 2008 01:35 PM UTC | Site News

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Spock's Solar System Looks Like Ours

By Nancy Atkinson - October 27, 2008 09:11 AM UTC | Exoplanets

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Ham Radio Operator Communicates with Space Station

By ian - October 27, 2008 03:21 AM UTC | Space Exploration

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Manueuver Puts Chandrayaan in Deep Space

By Nancy Atkinson - October 26, 2008 11:17 AM UTC | Planetary Science

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Russian Spacecraft Producer: No More Money for Soyuz

By ian - October 25, 2008 11:58 PM UTC | Space Policy

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US Air Force Increases Investment in Satellite Protection Technology

By ian - October 25, 2008 01:39 PM UTC | Space Policy

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Midnight At The OPT Corral: Shootout Between The Celestron SkyScout and Meade MySKY

By tammy-plotner - October 25, 2008 08:41 AM UTC | Telescopes

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Google Founders Buy Fighter Jet... to Help NASA

By ian - October 24, 2008 07:32 PM UTC | Space Policy

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Could Strange Mars Craters be from a Fallen Third Moon?

By ian - October 24, 2008 03:55 PM UTC | Planetary Science

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Full Moon

By Fraser Cain - October 24, 2008 02:24 PM UTC | Planetary Science

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Lunar Month

By Fraser Cain - October 24, 2008 02:05 PM UTC | Planetary Science

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Orbit of the Moon

By Fraser Cain - October 24, 2008 11:43 AM UTC | Planetary Science

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Weekend SkyWatcher's Forecast - October 24-26, 2008

By tammy-plotner - October 24, 2008 04:33 AM UTC | Observing

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We've Got A Winner!

By tammy-plotner - October 24, 2008 03:00 AM UTC | Site News

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Life Will be Hard for Colonists - Kaguya Can't Find Water on the Moon

By ian - October 23, 2008 10:30 PM UTC | Planetary Science

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Where Have All the Gamma Ray Bursts Gone?

By ian - October 23, 2008 06:09 PM UTC | Extragalactic

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Asteroseismology: Observing Stars Vibrate with CoRoT

By ian - October 23, 2008 03:36 PM UTC | Stars

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Moon Albedo

By Fraser Cain - October 23, 2008 01:58 PM UTC | Planetary Science

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Aldrin: Mars Pioneers Should Not Return to Earth

By ian - October 23, 2008 01:38 PM UTC | Space Policy

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Dark Knight Ahead - B33 by Gordon Haynes

By tammy-plotner - October 23, 2008 11:02 AM UTC | Milky Way

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We All Say "Excited!" In The Same Language

By Nancy Atkinson - October 23, 2008 09:16 AM UTC | Site News

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Where In The Universe Challenge #26

By Nancy Atkinson - October 22, 2008 01:15 PM UTC | Observing

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Light From the Moon

By Fraser Cain - October 22, 2008 12:59 PM UTC | Planetary Science

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India's Chandrayaan-1 On Its Way to the Moon

By Nancy Atkinson - October 22, 2008 12:54 PM UTC | Planetary Science

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The Moon and Venus

By Fraser Cain - October 22, 2008 11:14 AM UTC | Planetary Science

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Flag on the Moon

By Fraser Cain - October 22, 2008 10:50 AM UTC | Planetary Science

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First Man on the Moon

By Fraser Cain - October 22, 2008 10:29 AM UTC | Planetary Science

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Area of the Moon

By Fraser Cain - October 22, 2008 10:04 AM UTC | Planetary Science

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The Martian Ice-Filled, Oyster Shell-Shaped Crater (HiRISE Images)

By ian - October 21, 2008 12:59 PM UTC | Planetary Science

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Book Review: Hubble: Imaging Space and Time

By Mark Mortimer - October 21, 2008 11:17 AM UTC | Missions

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Podcast: Nebulae

By astronomycast - October 21, 2008 11:09 AM UTC | Extragalactic

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Phoenix Lander May Have Been Blasted by Dust Devil

By Nancy Atkinson - October 20, 2008 10:53 AM UTC | Planetary Science

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Carnival of Space #75

By Fraser Cain - October 20, 2008 09:51 AM UTC | Site News

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Podcast: Galactic Dust, the Speed of Photons, and the Big Bang Calculations

By astronomycast - October 20, 2008 09:34 AM UTC | Cosmology

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Podcast: The Search for Extraterrestrial Intelligence

By astronomycast - October 20, 2008 09:19 AM UTC | Astrobiology

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