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Mercury

Seared by a Sun shining ten times stronger than it does at Earth, Mercury is a burnt-out cinder, a roasted Moon-like world -- or is it? NASA's MESSENGER mission, the first orbiter of the smallest planet, has revealed a tumultuous volcanic past, enigmatic recent "hollows," and a dynamic exosphere. And it's chasing after clues from Earth-based radar surveys that Mercury could be hiding water ice in permanently shadowed craters near its poles. 

Recent Blog Articles About Mercury

Skimming the inner planets: Updates on MESSENGER and Venus Express

Posted by Emily Lakdawalla on 2014/06/24 11:52 CDT | 1 comment

The two spacecraft currently orbiting the two innermost planets are both flying low in their orbits in the final phases of their missions. MESSENGER just performed a rocket burn to raise its orbit slightly, while Venus Express did the opposite.

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Another Day in the Solar System

Posted by Bill Dunford on 2014/05/12 09:56 CDT | 1 comment

One day, five worlds.

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Snapshots of Science from the 2014 Lunar and Planetary Science Conference

Posted by Emily Lakdawalla on 2014/03/25 02:45 CDT | 2 comments

Vignettes from dozens of LPSC talks: GRAIL and LADEE at the Moon; ice and craters and conglomerates and organics and gullies on Mars; polar deposits and volatile elements on Mercury; tectonics on Enceladus; and more, until my brain was so full I could barely speak.

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Intro Astronomy Class 4: Eclipses, Mercury, Venus-Earth-Mars Atmospheres, Venus

Posted by Bruce Betts on 2014/02/28 01:30 CST

This video of class 4 of Bruce Betts' Introduction to Planetary Science and Astronomy class discusses eclipses, Mercury, Venus, and a comparison of the atmospheres of Venus, Earth, and Mars.

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A Spin Through the Inner Solar System

Posted by Bill Dunford on 2014/02/24 09:57 CST | 1 comment

Animated maps of the planets show the spheres in motion.

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What are Mercury's hollows?

Posted by Emily Lakdawalla on 2014/02/18 09:33 CST | 10 comments

I've been fascinated by Mercury's hollows ever since MESSENGER discovered them. Two recent papers look at where they are found to try to figure out how they form.

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Intro Astronomy Class 1: Tour of the Solar System

Posted by Bruce Betts on 2014/02/11 05:53 CST | 1 comment

Take a tour of the Solar System in the video of class 1 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Take My Free Online College Introduction to Planetary Science and Astronomy CSUDH Class

Posted by Bruce Betts on 2014/02/05 05:02 CST | 8 comments

Our own Dr. Bruce Betts is once again teaching his Introduction to Planetary Science and Astronomy college course online. Come join him.

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The Giant Spider of Mercury

Posted by Bill Dunford on 2014/01/27 01:23 CST | 3 comments

Striking terrain discovered by the MESSENGER probe.

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The Mercury Transit You Probably Missed

Posted by Karl Battams on 2013/12/30 10:29 CST | 2 comments

Planetary transits of the Sun by Mercury and Venus don't come along very often, and when they do we make a big deal of it because, well, it's really cool!

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