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How radio telescopes get "images" of asteroids

Emily Lakdawalla • November 08, 2011

This is a repost of an article I wrote in April 2010; I thought it'd be useful reading for those of you interested in today's near-Earth flyby of asteroid 2005 YU55.

Science from Vesta at the Geological Society of America meeting

Emily Lakdawalla • October 24, 2011

I'm nearly two weeks late getting to this news but better late than never, right? There was a press briefing from the Dawn mission at the Geological Society of America (GSA) meeting on October 12.

Lovely pic of a recent crater on Vesta

Emily Lakdawalla • October 11, 2011

With little fanfare, the Dawn mission continues releasing a new picture from Vesta every day. This one is definitely my favorite among their recent releases, a closeup on one of Vesta's strange streaky bright craters.

Notes from Day 5 of the EPSC/DPS meeting: Saturn's storm, Phobos, and Lutetia

Emily Lakdawalla • October 07, 2011

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

Brief notes from Day 2 of the DPS-EPSC meeting

Emily Lakdawalla • October 04, 2011

It's been a very full day at the DPS-EPSC 2011 joint meeting. My day was less full than it might have been, because I overslept and missed most of the morning's session. I really needed the rest though so I think it was probably for the best!

Some first impressions of EPSC-DPS meeting

Emily Lakdawalla • October 03, 2011

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!

Video: Zooming around Vesta

Emily Lakdawalla • September 16, 2011

The Dawn team released today a nice little video that flies around a shape model of Vesta produced by DLR, the German Aerospace Corporation, who built and operate Dawn's camera.

Dawn's cryptic image release titles

Emily Lakdawalla • September 14, 2011

Every day's image release from the Dawn spacecraft shows something on Vesta that is weird and cool and difficult to explain. The images come out with very little information describing what is going on to make those weird landscapes.

Meeting today: The infelicitously named "SBAG"

Emily Lakdawalla • August 25, 2011

NASA funds regular meetings of scientists who work on different parts of the solar system to provide scientific input into NASA's future plans. These "analysis groups" are known by their acronyms, all of which sound kind of horrible, but none has quite as terrible-sounding an acronym as "SBAG," usually pronouced "ess-bag," the Small Bodies Assessment Group.

Vesta's wacky craters

Emily Lakdawalla • August 16, 2011

Dawn's images of Vesta show craters upon craters, but the longer I study the images, the wackier the craters look.

What I see in the first high-res Dawn images of Vesta

Emily Lakdawalla • August 02, 2011

I had to wait until the kids were in bed and the husband fed last night before I finally had time to sit down and really look at the Dawn images of Vesta. And I still hardly knew where to begin. This brand new world is just so different than others I've seen.

Fabulous Dawn Vesta images and rotation movie!!

Emily Lakdawalla • August 01, 2011

Now that Dawn's close enough to Vesta, we're seeing absolutely spectacular detail and tremendous diversity across Vesta's surface. As usual it'll probably take me a while to bring together all the new information, so as a stopgap I'm going to post an awesome image and a rotation movie.

A different face of Vesta (oh, *there's* the craters!)

Emily Lakdawalla • July 29, 2011

Here's the latest image release from Dawn at Vesta, taken from an altitude about twice as high as that of their first mapping orbit.

Dawn Journal: Dawn has arrived!

Marc Rayman • July 26, 2011

After covering 2.8 billion kilometers (1.7 billion miles) on its own, after traveling for nearly four years through the lonely emptiness of interplanetary space, after being bound by the gravity only of the sun, Dawn is finally in orbit around Vesta.

Vesta in infrared color!

Emily Lakdawalla • July 19, 2011

Yet another sharp-eyed reader (I love my readers!) pointed out to me that the German-language release on the MPS website about the latest Vesta image from Dawn included what looked like a tiny thumbnail of a color view.

Yet another new image of Vesta

Emily Lakdawalla • July 18, 2011

A sharp-eyed reader noticed that a size comparison montage posted by the Dawn mission today included an image of Vesta that had not yet been released separately to the public, and it is a very cool one.

Congratulations to the Dawn team on their orbit entry & pretty pictures!

Emily Lakdawalla • July 18, 2011

There's a new orbital mission on the map! As of Friday, the relatively small mass of the asteroid Vesta has finally taken hold of its new artificial satellite, Dawn.

Origins 2011 conference, part 1

Frank Trixler • July 14, 2011

The Origins 2011 conference, which took place last week in Montpellier, France, was dedicated to the origins of life and its occurrence in the universe. At this meeting, scientists from very different disciplines came together to share their ideas.

Ever closer to Vesta

Emily Lakdawalla • July 04, 2011

Here's a photo of Vesta that was released by the Dawn team on Friday. I didn't post it right away because the version of the image in the official release has some bizarre processing artifacts that make it look as though the image had been made by cutting construction paper.

Amateur takes on the Dawn Vesta images

Emily Lakdawalla • June 24, 2011

I am pretty sure that the Dawn team put nearly every image they've taken of Vesta so far in the animation they released yesterday, which is awesome. It hasn't taken long for the amateur image processing community to pick that animation apart into its component frames and process the heck out of the individual images to produce some very fine looking images and animations.

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