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Stories, updates, insights, and original analysis from The Planetary Society.
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.
Mars Express' January 2011 Phobos images show how camera works
The Mars Express High-Resolution Stereo Camera (HRSC) team has just released several images from the most recent series of Phobos flybys to the Mars Express blog.
Nanosail-D released into space
NASA's Nanosail-D spacecraft surprised everyone, including its controllers, by suddenly deploying from its parent FASTSAT spacecraft and beginning its mission in space.
Two fine color Cassini animations: Prometheus rotating, Tethys and Dione dancing
Daniel Macháček has reached into the dark side of Prometheus and pulled out an incredible amount of detail where the potato-shaped moon is illuminated by Saturnshine. He produced an animation that morphs among the three sets of four-filter color images that Cassini snapped during the flyby.
It's Alive! It's Alive!
It was once thought lost in space, but it looks like NanoSail-D has ejected from its FastSat carrier and is preparing for deployment.
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
Rosetta burns for its comet
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.
A Worldwide Game of "Telephone" Distorts NASA Meeting
In the last couple of weeks, media outlets around the world have been reporting that NASA recently convened a private meeting at JPL to identify the worst movies ever made, scientifically speaking. It seemed like a good story. The problem was that it wasn't true.
Radar topographic view of a volcano
Quick -- where is this? Is it one of Venus' iconic volcanoes? Or maybe Mars'?
Scientific clarification: "inverted topography" is more general than "esker-like features"
In the past couple of months I've received several emails from scientists offering clarifications, corrections, or alternative points of view to previous posts, which is awesome and something that I enthusiastically encourage. Here's one of them.
Another scientific clarification: Vanth probably not half the mass of Orcus
Earlier this week I got all excited about the Orcus-Vanth system. It turns out there was a math error in the version of the paper that I read, which resulted in the notion that Vanth could be nearly as big as Orcus.
2010 JL33: How to see an asteroid from quite a long way away
A terrific set of Goldstone radar images of a good-sized near-Earth asteroids named 2010 JL33 was posted to the JPL website yesterday. They also posted a movie version but something about these pixelated radar image series absolutely begs for them to be displayed as an old-school animated GIF, so I made one.
Goodies from the January 11 Rhea flyby
Cassini got some incredibly tricky shots during its January 11 Rhea flyby!
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.
"A genuinely weird experience": A video of Steve Squyres explaining a photo of Steve Squyres
In a lovely talk, in his uncommonly engaging way, Steve Squyres presents the portrait of him that now hangs in the Smithsonian's National Portrait Gallery.
Video: The Frontier Is Everywhere
A young and enthusiastic NASA supporter has married Carl Sagan's writing with images to create a YouTube video in the hope of helping NASA engage the public in its mission of exploration.
Orcus and Vanth
As part of a big, ongoing project to make a comparison chart of the dimensions and physical properties of solar system objects I've spent the morning tackling the difficult problem of summarizing the physical characteristics of the biggest things that are out there beyond Neptune.
Grab bag: "Rocky" exoplanet, molten lunar core, Rhea close encounter
The Kepler exoplanet hunting mission has made news today with a report of
Stardust mission update: 38 days to Tempel 1
Stardust is healthy after performing a
Solar eclipses from space: Hinode and SDO
Two spacecraft that keep their ever-watchful eyes on the Sun -- NASA's Solar Dynamics Observatory (SDO) and JAXA's Hinode -- were doing their thing, when something large wandered past: the Moon.



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