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Blogs

Blog Archive

 

Favorite Astro Plots #3: The rate of lunar cratering

Posted by Emily Lakdawalla on 2015/11/30 07:03 CST

The third entry in my series of blog posts about Favorite Astro Plots contains one of the biggest discoveries from the Apollo program -- as well as one of the biggest questions in planetary science. The chart was nominated by planetary scientist Barbara Cohen. It has to do with the ages of surfaces on the Moon.

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The Lunar Chronology: What Happens When Science Does Its Thing

Posted by Stuart Robbins on 2015/04/01 09:34 CDT | 4 comments

Scientist Stuart Robbins discusses dating the lunar surface is using impact craters.

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

Posted by Bruce Betts on 2015/02/04 05:00 CST | 1 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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Lunar Reconnaissance Orbiter's Ongoing Adventure

Posted by Samuel Lawrence on 2014/05/29 06:16 CDT | 5 comments

A few people think that when it comes to the Moon, because we’ve “been there, and done that,” there is nothing new left to discover. But that viewpoint could not be farther from the truth!

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Intro Astronomy Class 9: Titan, Uranus and Neptune Systems

Posted by Bruce Betts on 2014/04/11 02:31 CDT

Examine Saturn's moon Titan and explore the Uranian and Neptunian systems in this video of class 9 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Intro Astronomy 2014. Class 8: Icy Galilean Satellites, Saturn System

Posted by Bruce Betts on 2014/04/11 02:28 CDT

Explore the icy moons of the Jupiter System and tour the Saturnian system in this video of class 8 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Fireworks in the Earth's Sky Sent from the Moon: Reflections from LPSC 2014

Posted by Deepak Dhingra on 2014/04/03 07:00 CDT

Deepak Dhingra reports on presentations from this year's Lunar and Planetary Science Conference focusing on how impacts on the Moon have affected Earth.

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Intro Astronomy Class 7: Near Earth Asteroids and the Jupiter System

Posted by Bruce Betts on 2014/03/21 02:10 CDT

Examine the threat of near Earth asteroids and begin exploring the Jupiter System in this video of class 7 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Intro Astronomy Class 6: Mars (continued) and Asteroids

Posted by Bruce Betts on 2014/03/14 06:10 CDT

Continue exploring Mars and learn about asteroids in this video of class 6 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Intro Astronomy Class 5: Venus (continued) and Mars

Posted by Bruce Betts on 2014/03/06 10:49 CST

Continue exploring Venus and begin looking at Mars in this video of class 5 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Hypervelocity Cratering and Riding Out the Risk

Posted by ESA Mars Express Team on 2014/03/06 07:34 CST

Today's update from the Mars Express team contains the realisation that, for some of the risks associated with October's Siding Spring flyby, there may not be much the team can do.

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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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Pretty pictures of terraced craters on Mars

Posted by Emily Lakdawalla on 2014/02/27 10:16 CST | 3 comments

Check out this unusual crater on Mars. It's not a very big one, less than 500 meters in diameter, and yet it has two rings. Most craters on Mars this size are simple bowl shapes. What's going on here?

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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 comments

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 | 9 comments

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

Read More »

Dating the Moon's basins

Posted by Emily Lakdawalla on 2013/09/26 03:33 CDT | 5 comments

A paper in press in the Journal of Geophysical Research uses new data from Lunar Reconnaissance Orbiter to update our story for the history of the Moon's massive impacts.

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Saving the Planet can be Exciting!
The Asteroid Emergency Response Tabletop Exercise at the Planetary Defense Conference

Posted by Mat Kaplan on 2013/05/07 05:02 CDT

Planetary Radio for the week of May 6 visits the Planetary Defense Conference one last time to join a "tabletop" simulation of a killer asteroid threat.

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An Amazing Evening for Planetary Defense
Join us via Planetary Radio and complete video coverage.

Posted by Mat Kaplan on 2013/04/23 07:12 CDT | 1 comments

Bill Nye, Bruce Betts, Mat Kaplan, Meteorite Man Geoffrey Notkin and stars of planetary science at the Planetary Defense Conference public event in Flagstaff.

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LPSC 2013: The Smaller They Are, The Better They Shake

Posted by Emily Lakdawalla on 2013/03/25 08:04 CDT | 1 comments

Really cool movies from Jim Richardson propose to explain how the same physics of impact cratering can produce such differently-appearing surfaces as those of the Moon, large asteroids like Eros, and teeny ones like Itokawa.

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Beautiful butterfly crater on Mars (another HiWish granted!)

Posted by Emily Lakdawalla on 2012/11/08 07:16 CST | 6 comments

I asked Mars Reconnaissance Orbiter to take a photo, and it turned out better than I had imagined: an incredibly fresh, well-preserved, dramatically rayed oblique impact crater.

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