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Stories, updates, insights, and original analysis from The Planetary Society.
First image from Stardust! ...but a delay for the close-approach ones
Here it is, the first image from Stardust of Tempel 1 during the close-approach phase!
High-res images of Tempel 1 from Stardust now arriving
I really didn't expect these images to look so good! I'd prepared myself for blurry images and a lot of squinting to try to match up features in pictures between Deep Impact and Stardust views of Tempel 1, but in fact the resemblance is obvious and you can clearly see that they successfully imaged the area in which Deep Impact's Impactor craft collided with the comet.
Stardust flies by Tempel 1 in 5 hours, and I'll be watching!
Stardust is very close to the last major act of its mission: the flyby of Tempel 1, which will take place at 20:40 PST (04:40 UTC). Here's a summary of the recent and current status of the mission, and how to follow the events over the next 24 hours.
Stardust update: Almost to Tempel 1
We're coming up on the final days of Stardust's approach to Tempel 1. The flyby takes place on February 15 at 04:56 UTC (February 14 at 20:56 PST).
Stardust update: Tempel 1 Ahoy!
It is with great relief that I now report that JPL announced this evening the sighting of Tempel 1 by Stardust, a mere month before the planned flyby.
Stardust update: Tempel 1 not yet spotted by spacecraft, hopefully next week
A new update has been posted to the Stardust website: The spacecraft continues to operate as expected and all subsystems are healthy on approach to comet Tempel 1.
Stardust prepares for first second look at a comet: Tempel 1 on February 14
A press briefing was held at NASA Headquarters this morning to preview the planned February 14 encounter by Stardust with Tempel 1. There aren't often lots of questions from media after these
365 Days of Astronomy Podcast: Unmanned Space Exploration in 2011
Today the 365 Days of Astronomy podcast aired my contribution, Unmanned Space Exploration in 2011, about what to look forward to in solar system exploration this year.
Stardust mission update: 38 days to Tempel 1
Stardust is healthy after performing a
Door 31 in the 2010 advent calendar
Time to open the thirty-first (and next-to-last) door in the advent calendar. Where in the solar system are these dark-rimmed craters?
SOHO's 2000th comet
SOHO was launched more than 15 years ago to study the Sun, primarily; but a side benefit of its constant observation of the Sun has been its ability to notice
365 Days of Astronomy Podcast: Small Worlds
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.
Deep Impact at Hartley 2: Two weeks after the flyby
Today the Deep Impact/EPOXI science team held a press briefing that followed up on their very successful flyby of two weeks ago, a status report on what they can say so far about the science that's coming out of the encounter.
Asteroids and comets to scale, including Hartley 2
Just in time for today's Deep Impact press briefing, which you can watch on NASA TV in a few minutes: I've updated my montage of all the asteroids and comets that have been visited and photographed to include Hartley 2.
In which I finally write up last week's Deep Impact Hartley 2 press briefing
On Thursday, November 4, at 13:50 UTC, Deep Impact flew within 700 kilometers of comet Hartley 2. Hartley 2 is the smallest and most active of the five comets that have been directly by a spacecraft, and the first to be visited within the lifetime of its discoverer.
Hartley 2 compared to other comets, and in motion 3D
I had to catch up with tasks left undone at home today and didn't have time to write up my notes from the Hartley 2 press briefing, for which I apologize. I'll leave you for the weekend with three cool Hartley 2 pictures.
Hartley 2's jets
It was a very happy set of scientists, engineers, managers, and administrators who filled the Jet Propulsion Laboratory's Von Karman auditorium this afternoon to do the postgame show on Deep Impact's flyby of Hartley 2.
Animation of the five closest-approach Hartley 2 images
Those of you who follow my blog must have known this was coming: now that I got all five new Deep Impact images of Comet Hartley 2 posted and explained, I had to make an animation. Here they are.
Five close-approach images of Hartley 2 by Deep Impact, with commentary
Here's the five close-approach images of Hartley 2 captured today, November 4, 2010, by the Deep Impact spacecraft, collected into one file. Boy, do these images reward close examination!
Close approach images of Hartley 2!
What a dramatic and cool photo! An asteroid with two lobes like Borrelly, lumpy and bouldery like Itokawa, with gorgeous active jets, dramatically lit. Well done, Deep Impact team!



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