Behold: the story of how our solar system began, in one chart. This is the second installment in a series of planetary scientists' favorite plots. Today's #FaveAstroPlot was suggested by spectroscopist Michael Bramble.
First part of a 3 part wrap up to April's Planetary Defense Conference: a very brief review of the status of research in asteroid threat related fields based on the conference, report on special activities at the conference, and links to video and audio related to the conference.
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.
Meteorites hit Earth all the time, but they almost never score direct hits on human-built structures (or humans, for that matter). Once in a while, though, direct hits do happen, and it looks like this recent event in Poland was the real thing.
The Mars Exploration Rover Opportunity has been studying a lot of meteorites. That made me wonder, why study meteorites on Mars when we can study them in hand on Earth? How are Mars meteorites interesting?
I wonder if this came from the same original body as Block Island, or if Meridiani is the kind of slowly deflating landscape that accumulates meteorites at its surface, like the ANSMET meteorite hunting spots in Antarctica?