Articles

Emily Lakdawalla

Today was (is) the last day of the Division of Planetary Sciences / European Planetary Science Congress meeting in Nantes, France.

Emily Lakdawalla

Here is a really cool view of Phobos in the foreground with gigantic (but very distant) Jupiter sitting in the background, a fortuitous alignment that the Mars Express High-Resolution Stereo Camera team took advantage of on June 1.

Emily Lakdawalla

One big space event that I missed while I was on vacation was Rosetta's entry into hibernation. Rosetta is the biggest interplanetary spacecraft that has been launched by ESA, and it has the groundbreaking goal of entering orbit around a comet and dropping a lander onto it.

Emily Lakdawalla

Whenever we explore someplace new -- a new island, a new continent, a new cave, a new world -- there's a necessary activity that explorers must perform before they can sensibly tell the world about their discoveries: name things.

Emily Lakdawalla

Regular readers of this blog will find the content of today's 365 Days of Astronomy Podcast familiar, because it's an update on what the solar system exploration spacecraft are up to, based on my monthly

Emily Lakdawalla

April 2011 will see MESSENGER begin the science phase of its orbital mission at Mercury, and should, I think, also see the start of Dawn's approach observations of Vesta. At Mars, Opportunity is back on the road again, rolling inexorably toward Endeavour. At Saturn, Cassini will continue its focus on Saturn and Titan science.

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

ESA's Rosetta comet chaser has achieved 98% of the velocity change that it needed to accomplish in order to set itself up for the final leg of its cruise to comet Churyumov-Gerasimenko. The original plan was to perform this velocity change in a series of five rocket burns at the end of January, but the plans were interrupted by a scary event: the spacecraft went into safe mode during the second burn, on January 18.

Emily Lakdawalla

The Rosetta blog has been strangely quiet of late, after they had been quite actively posting updates on the status of Rosetta during a critical series of orbit adjustment burns, which I wrote about two weeks ago.

Emily Lakdawalla

Rosetta -- Europe's comet-chasing spacecraft -- is in the middle of a three-day series of rocket firings that are setting the geometry for its rendezvous with comet 67/P Churyumov-Gerasimenko.

Emily Lakdawalla

Today the 365 Days of Astronomy podcast aired my contribution, Small Worlds, about the smaller denizens of the solar system visited in the past year, and due to be visited in the next.

Emily Lakdawalla

Time to open the thirteenth door in the advent calendar. Where in the solar system are these parallel gouges?

Emily Lakdawalla

Since it doesn't look like the Rosetta mission is going to be releasing any color versions of their Lutetia close-encounter images any time soon, I figured it was time to make one.

Emily Lakdawalla

I saw these pictures for the first time just 10 minutes before boarding my flight back home, and forced myself to download everything I could find as quickly as possible without pausing to actually look at them.

Emily Lakdawalla

A quick post of just one of the gorgeous images from Rosetta's flyby of Lutetia today; for more, see the Rosetta Blog. But this one was just too pretty to wait for.

Emily Lakdawalla

All appears to be going very smoothly on Rosetta through, and after, its flyby today of asteroid (21) Lutetia.

Emily Lakdawalla

A quick post to gather information on where to watch the events of today's flyby of asteroid (21) Lutetia by Rosetta.

Emily Lakdawalla

Rosetta's most important job over the last few months has been to observe how the position of asteroid (21) Lutetia shifts against the background of fixed (fixed, that is, as far as Rosetta can see) stars.

Emily Lakdawalla

On July 10, 2010, at 15:44:56 UTC, the Rosetta spacecraft will fly within 3,162 kilometers of the largest asteroid yet visited by a spacecraft.

Emily Lakdawalla

While I was waiting for President Obama's speech yesterday, I read over a paper by I. N. Belskaya et al titled