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Blog Archive

 

LPSC 2016: Differentiated meteorites provide a glimpse of the early solar system and planets

Helen Ashcroft • April 11, 2016

This year's Lunar and Planetary Science Conference included a session devoted to a group of rocks from space called differentiated meteorites, and their proposed parent bodies.

Favorite Astro Plots #2: Condensation of the solar system

Emily Lakdawalla • October 14, 2015

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.

Forensic Ballistics: How Apollo 12 Helped Solve the Skydiver Meteorite Mystery

Philip Metzger • April 21, 2014

What can a 45-year-old mission to the Moon tell us about a "meteorite" flying past a skydiver on Earth?

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

Bruce Betts • March 21, 2014

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.

Intro Astronomy Class 6: Mars (continued) and Asteroids

Bruce Betts • March 14, 2014

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

Planetary Defense Conference 2013 Part 2

Bruce Betts • May 29, 2013

Second part of a three part wrap up to April's Planetary Defense Conference: a report on Planetary Shoemaker NEO Grant related activities and people at the Planetary Defense Conference 2013

Planetary Defense Conference 2013 Part 1

Bruce Betts • May 24, 2013

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.

An Amazing Evening for Planetary Defense

Mat Kaplan • April 23, 2013

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

LPSC 2013: Do we have a meteorite from Mercury?

Emily Lakdawalla • March 21, 2013

Before yesterday, my answer to this question would be "no." Now my answer is "probably." But it's not clear if we know which of the meteorites in our collections is from the innermost planet.

What We Know About the Russian Meteor Event [UPDATED]

Heidi Hammel • February 15, 2013

Preliminary estimates show that the meteoroid was 15 meters wide and weighed roughly 8000 tons. The resulting airburst would have the equivalent yield of about a 1/2 megaton explosion.

DPS 2012, Day 5: How to make asteroids crunchy on the outside and soft in the middle

Emily Lakdawalla • October 19, 2012

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.

A rare direct hit from a meteorite

Emily Lakdawalla • May 09, 2011

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.

Holy cow, is it really the 175th Carnival of Space already?

Emily Lakdawalla • October 26, 2010

175th Carnival of Space!? That means the Carnival of Space has been going on for nearly 4 years. Or just about 2 Mars years. Pretty amazing.

One month, one journal, so many missed space stories!

Emily Lakdawalla • June 24, 2010

Or: Emily reads you the table of contents of Icarus.

Planetary Radio Q and A: Are meteorites on Mars actually interesting?

Emily Lakdawalla • November 09, 2009

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?

It would appear that Opportunity has stumbled upon another meteorite

Emily Lakdawalla • October 02, 2009

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?

New image of Opportunity on Mars

Emily Lakdawalla • August 14, 2009

I really can't explain why it didn't occur to me to search for the rover in the image of Victoria crater released by the HiRISE team on Wednesday.

Astronomers Revise Torino Scale Asteroid Advisory System

A.J.S. Rayl • April 20, 2005

Astronomers have revised the Torino scale, the color-coded advisory system to assess the threat of asteroids and other near-Earth objects (NEOs) to make it easier for the public to understand.

astronaut on Phobos
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