Blog Archive
Posted by Emily Lakdawalla on 2012/11/02 08:03 CDT | 1 comments
Today I stumbled upon the Lunar and Planetary Institute's Lunar Sample Atlas, and was reminded of how much I love petrographic thin sections. They can make unassuming, cruddy looking rocks beautiful.
Book Review: Planetary Surface Processes, by H. Jay Melosh
Posted by Emily Lakdawalla on 2012/10/23 12:18 CDT | 2 comments
Planetary Surface Processes provides a rigorous overview of every process that shapes the appearance of planetary surfaces, and I'll be referring to it to help me explain everything from impact cratering to isostasy.
DPS 2012, Day 5: How to make asteroids crunchy on the outside and soft in the middle
Posted by Emily Lakdawalla on 2012/10/19 07:53 CDT | 2 comments
A summary of just one talk from the Division for Planetary Sciences meeting, by Lindy Elkins-Tanton, which provided a neat explanation for how asteroids can be melted and layered on the inside yet have a primitive-looking exterior.
DPS 2012, Monday: Icy moons and a four-star exoplanet
Posted by Emily Lakdawalla on 2012/10/15 11:31 CDT | 1 comments
In the first full day of the annual meeting of the Division of Planetary Sciences of the American Astronomical Society, I listened to scientific sessions on icy worlds and on an exoplanet in a four-star system.
First science reports from Curiosity's APXS and ChemCam: Petrology on Jake Matijevic
Posted by Emily Lakdawalla on 2012/10/12 01:18 CDT | 16 comments
A Curiosity press briefing yesterday gave some of the first results from ChemCam and APXS on the rock "Jake Matijevic." It was a little too much petrology for most people; I do my best to explain.
Sturzstroms on Saturn’s Moon Iapetus
Posted by Kelsi Singer on 2012/10/01 04:31 CDT
Long-runout landslides (sturzstroms) are found across the Solar System. They have been observed primarily on Earth and Mars, but also on Venus, and Jupiter’s moons Io and Callisto. I have just published a paper about sturzstroms on Iapetus.
Cosmoquest Science Hour, Wednesday: A virtual field trip to the hills on Curiosity's horizon
Posted by Emily Lakdawalla on 2012/09/25 04:50 CDT | 2 comments
I'm hosting this week's Cosmoquest Science Hour, and plan to take viewers on a virtual tour of those mountains on Curiosity's horizon, and show you where Curiosity is likely to go. Join me and Fraser Cain here at 1600 PDT / 2300 UTC Wednesday.
Fun for all ages: creating and mapping a volcano
Posted by Mike Malaska on 2012/08/18 11:26 CDT
Here’s a fun, cheap, and only slightly messy demonstration activity for kids of all ages, even 46-year-old kids: creating and mapping an ancient volcano.
Curiosity sol 11 update: Decision to drive to "the high thermal inertia unit" and what that means
Posted by Emily Lakdawalla on 2012/08/17 06:06 CDT | 8 comments
Some notes from this morning's Curiosity press briefing: the rover will be driving to "Glenelg" to investigate the "high thermal inertia unit." I explain what that means, with psychedelic Odyssey THEMIS images of the landing site.
A geochemist's Periodic Table of Elements
Posted by Emily Lakdawalla on 2012/06/25 07:39 CDT | 4 comments
The Periodic Table of Elements that hangs in chemistry classrooms doesn't include a lot of the information about elements that's most important to geologists. Here's one that does.
Full Free Intro Astronomy Class Now Online
Posted by Bruce Betts on 2012/05/22 02:57 CDT | 1 comments
Bruce Betts' complete CSUDH Intro Astronomy and Planetary Science class is now available online. Find out how to access it, and go behind the scenes.
Posted by Emily Lakdawalla on 2012/05/14 03:02 CDT | 5 comments
I took a field trip to watch scientists and engineers play in the sand with Mars rover models, and got a bonus tour of some evidence for the "Snowball Earth" hypothesis.
Notes from the Lunar and Planetary Science Conference: Is there ice at Mercury's poles?
Posted by Emily Lakdawalla on 2012/03/22 10:28 CDT
Water ice at Mercury's poles? That's crazy, right? Mercury is so close to the Sun that it seems inconceivable that you could have water ice there. But Mercury's rotational axis has virtually no tilt (MESSENGER has measured its tilt to be less than 1 degree), so there are areas at Mercury's poles, most often (but not always) within polar craters, where the Sun never rises above the horizon to heat the surface.
Iapetus' peerless equatorial ridge
Posted by Emily Lakdawalla on 2012/02/22 01:49 CST
A new paper in the Journal of Geophysical Research - Planets by Dombard, Cheng, McKinnon, and KayI claims to explain how Iapetus' equatorial ridge formed. Cool!�
Has Mars Express MARSIS data proved that Mars once had a northern ocean?
Posted by Emily Lakdawalla on 2012/02/07 05:46 CST
There's been a bit of buzz on the Web this week regarding an ESA press release titled "ESA's Mars Express radar gives strong evidence for former Mars ocean." I don't ordinarily write about press-released science papers, but am making an exception for this one
Guest Post: Patrick Donohue: Six days in the crater (day one)
Posted by Pat Donohue on 2012/02/03 10:02 CST
Guest Post: Patrick Donohue: Six days in the crater (day one)
Notes from Day 5 of the EPSC/DPS meeting: Saturn's storm, Phobos, and Lutetia
Posted by Emily Lakdawalla on 2011/10/07 07:09 CDT
Notes from Day 5 of the EPSC/DPS meeting: Saturn's storm, Phobos, and Lutetia
Notes from Day 3 of the EPSC/DPS meeting (all about MESSENGER)
Posted by Emily Lakdawalla on 2011/10/05 11:04 CDT
Notes from Day 3 of the EPSC/DPS meeting (all about MESSENGER)
Some first impressions of EPSC-DPS meeting
Posted by Emily Lakdawalla on 2011/10/03 11:55 CDT
Some first impressions of EPSC-DPS meeting
Tethys and Dione don't seem to be active after all
Posted by Emily Lakdawalla on 2011/09/23 01:09 CDT
Tethys and Dione don't seem to be active after all











