Articles

Marc Rayman

Deep in the asteroid belt, Dawn continues thrusting with its ion propulsion system. The spacecraft is making excellent progress in reshaping its orbit around the sun to match that of its destination, the unexplored world Vesta, with arrival now less than five months away.

Emily Lakdawalla

Here are some of the noteworthy items from the morning's session on

Emily Lakdawalla

To relieve this week's text-heavy LPSC posts, here's a brief one on an incredible panorama across Saturn's northern storm, taken on February 26 by Cassini and assembled by unmannedspaceflight.com member

Emily Lakdawalla

Science is all about asking questions, coming up with ideas that might explain the answers, and then poking at those ideas to see if they work. Scientists spend much of their time in solitary research working out those ideas. But they also devote big chunks of time to meetings where they pitch their ideas and see what their peers think of them.

Charlene Anderson

The embargo has just been lifted on the National Research Council's

Louis D. Friedman

The first full scale deployment of the Planetary Society's LightSail 1 solar sail was conducted on March 4, 2011 at Stellar Exploration in San Luis Obispo, California.

Charlene Anderson

Another painful loss to NASA's mission to study Earth from space: Today a Taurus XL rocket failed to lift the Glory satellite into Earth orbit when its clam-shell nosecone refused to open, forcing the rocket and its payload into the southern Pacific Ocean.

Emily Lakdawalla

The Lunar and Planetary Science Conference is happening next week. The sessions and abstracts are all in PDF format, so it's tiresome to access them online; I much prefer to download them all to my computer and browse them locally.

Emily Lakdawalla

In my last couple of posts about the Stardust spacecraft, which is now basically out of fuel after a remarkably successful extended mission to comet Tempel 1, I've mentioned that it's soon to be decommissioned. A reader asked me: what does it mean to decommission a spacecraft?

Emily Lakdawalla

Last week the Mars Exploration Rover team dumped another 90 sols' worth of data from Mars into NASA's Planetary Data System, the national repository for space mission data. As I did once before, I dove into this fresh pile of data to pull out Opportunity's color views of the distant rim of Endeavour crater.

Emily Lakdawalla

Data from two of the cameras aboard Chandrayaan-1 are now available through the ISRO Science Data Archive (ISDA), a new(?) site that is being established to host the data from ISRO's deep-space missions.

Emily Lakdawalla

Now in its sixth year, GLOBE at Night is a citizen science program that marshals the eyes of thousands of people around the world once a year to assess the degree to which light pollution diminishes our views of starry skies.

Emily Lakdawalla

I don't think there's any question what the big event of this month will be: MESSENGER is finally, finally entering orbit at Mercury on March 18 at 00:45 UTC (March 17 at 16:45 for me).

Emily Lakdawalla

I'm pleased to announce the winners of the Planetary Society's

Emily Lakdawalla

Yesterday the 365 Days of Astronomy podcast aired my contribution, Stardust at Tempel 1: The First Second Trip to a Comet.

Charlene Anderson

Are you concerned about the future of women in science? Well, you should be, since the women working in science today and tomorrow will help shape the world you live in.

A.J.S. Rayl

The Mars Exploration Rover (MER) mission emerged from its third solar conjunction this month and, as March roars in, is embarking on its 86th month on the Red Planet. While Opportunity roved away from a surface target it had been studying at Santa Maria Crater and on to an intriguing blue boulder, JPL engineers on Earth stepped up their efforts to recover Spirit, which has been silent, ostensibly in hibernation mode, since late March, nearly one year ago.

Charlene Anderson

A Planetary Society trifecta -- that's what Neil Tyson calls this episode of his StarTalk radio show broadcast this week. His guests include the Society's Vice President, Heidi Hammel, and its Executive Director, Bill Nye, (along with the Society's friend, Steve Squyres, Principal Investigator for the Mars Exploration Rovers).

Emily Lakdawalla

According to the Stardust website, the spacecraft has continued taking navigational camera images of Tempel 1 since last Monday's flyby. But

Emily Lakdawalla

There is a fascinating new page on the Mars Exploration Rover Pancam science team's website, full of color versions of Opportunity's microscopic images. The Microscopic Imager is one of the tools on the end of the robotic arm, and serves as a hand lens for the robot geologist to explore the rocks and sands of Mars in great detail.