A few times a year I find myself confronting a table full of numbers describing the orbits of things in the solar system, and cursing at myself because I've forgotten,�again, what all these numbers mean and how to manipulate them to get the particular numbers I want.
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
Posted by Pat Donohue on 2012/02/03 10:02 CST
Guest Post: Patrick Donohue: Six days in the crater (day one)
WhirledSol posted a cool Youtube tribute to the Planetary Society a year ago, and we just now found it! It has a nice explanation of why we are so passionate about space exploration.
Posted by Emily Lakdawalla on 2011/12/20 04:53 CST
A large team of researchers has announced in a Nature article the discovery of not one, but two, Earth-sized planets orbiting a star named Kepler-20. This article separates the observational facts from the quite-likely-to-be-true inferences from the downstream speculations.
Posted by Emily Lakdawalla on 2011/12/08 03:19 CST
A report on the press briefing and talks from the Fall 2011 American Geophyisical Union meeting about the data on Vesta collected so far by Dawn.
Posted by Emily Lakdawalla on 2011/12/01 07:22 CST
On the November 6, 2011 flyby of Enceladus -- the third such flyby in just a few weeks -- the Cassini mission elected to take a SAR swath instead of using the optical instruments for once. So here it is: the first-ever SAR swath on Enceladus. In fact, the only other places we've ever done SAR imaging are Earth, the Moon, Venus, Iapetus, and Titan.
Posted by Jason Davis on 2011/10/14 06:31 CDT
Data from Earth observing satellites Aura and CALIPSO have shown record losses of seasonal ozone in the Arctic.
Posted by Emily Lakdawalla on 2011/10/07 07:09 CDT
Today was (is) the last day of the Division of Planetary Sciences / European Planetary Science Congress meeting in Nantes, France.
Posted by Emily Lakdawalla on 2011/10/05 11:04 CDT
Today I largely spent in the MESSENGER sessions. They have a lot of data to talk about.
Posted by Emily Lakdawalla on 2011/10/03 11:55 CDT
Today they turned on the scientific fire hose at the Division of Planetary Sciences / European Planetary Science Congress meeting happening here in Nantes, France. My brain already feels full and I still have four more days!
Posted by Emily Lakdawalla on 2011/09/23 01:09 CDT
About four years ago I wrote a blog entry about an ESA press release about paper published in Nature that suggested that Saturn's moons Tethys and Dione might have volcanic activity, like Enceladus. A new paper published in Icarus casts doubt on that conclusion.
Posted by Emily Lakdawalla on 2011/09/20 01:58 CDT
When Hayabusa's sample return capsule was first opened and found to be very clean-looking inside, I doubted that there could be enough material for laboratory analysis. JAXA announced later that they scraped about 1500 dust grains from the inside with a teflon spatula, and these likely came from Itokawa.
Posted by Emily Lakdawalla on 2011/09/13 01:27 CDT
Jeff Moore's presentation was cool because of the discussion it stimulated. He considered what exogenic processes might be operating on Pluto's surface. What's an exogenic process? It's something that modifies the shape of the surface from the outside, and doesn't require the body to be geologically active inside.
Posted by Emily Lakdawalla on 2011/09/09 01:05 CDT
The second day of the New Horizons Workshop on Icy Surface Processes was about geology and geophysics. This long post just covers the first talk of that day.
Posted by Emily Lakdawalla on 2011/08/30 11:27 CDT
Today and tomorrow I'm attending the New Horizons Workshop on Icy Surface Processes. The first day was all about the composition of the surface and atmosphere of Pluto, Charon, Triton, and other distant places.