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The Planetary Society Blog
Archive
Archived posts are listed in reverse chronological order.
Apr. 20, 2011 | 15:03 PDT | 22:03 UTC
Historical PDF: "The Voyager Flights to Jupiter and Saturn"
A while ago I posted all 99 issues of the Voyager Mission Status Bulletins in PDF format, and now I have another cool item to add to that collection: NASA EP-191, "The Voyager Flights to Jupiter and Saturn." This was a 60-page booklet on nice,... More»
Apr. 20, 2011 | 08:09 PDT | 15:09 UTC
Outside scientists being invited in to Cassini mission
NASA announced last week the start of a Participating Scientist program for Cassini, which is big news, for outer planets scientists anyway. Lots and lots of other missions have participating scientist programs, from big missions like Mars Science... More»
Apr. 19, 2011 | 11:03 PDT | 18:03 UTC
Nearly behind Saturn
Some recent photos that Cassini took from a position nearly in Saturn's shadow caught my eye, and I made a quick color composite. What an amazing view this would be if you were riding on the spacecraft! Maybe with so little of the disk sunlit it... More»
Apr. 19, 2011 | 09:21 PDT | 16:21 UTC
Mercury's Weird Terrain
When Mariner 10 flew past Mercury, it caught an immense impact basin lying half in and half out of sunlight, which they named Caloris. Even with only half the basin visible, scientists knew it was one of the largest in the solar system. Click to... More»
Apr. 18, 2011 | 08:48 PDT | 15:48 UTC
Lovely crater turns up in MoonZoo; 2 million images classified, lots more Moon left
Here's a very pretty picture to start off the week: a really gorgeous fresh crater on the lunar farside. There's nothing particularly unusual about this crater; it's just recent and fresh so there's a mesmerizing amount of detail in the feathery... More»
Apr. 17, 2011 | 19:21 PDT | Apr. 18 02:21 UTC
Memo to Australians: Tell your government if space exploration benefits your community
Australia's Space Policy Unit is conducting a survey of people in the commercial space industry, state and local governments, and education and research sectors as part of an effort to assess the economic value of civil space to the country. If... More»
Apr. 15, 2011 | 14:25 PDT | 21:25 UTC
Please join us to send off Lou Friedman in style!
We're going to celebrate Lou Friedman's 30 years of service to the Planetary Society by mercilessly making fun of him at a gala "Roast and Toast" event in downtown Los Angeles on April 30. (We will probably say some very nice things about him too.)... More»
Apr. 15, 2011 | 12:37 PDT | 19:37 UTC
So far, no moons found at Ceres or Vesta
Since the Galileo mission discovered tiny Dactyl circling Ida in 1993, quite a lot of asteroid systems have been found to be binary; there are even a few triples. (The most recent reference I could find on a five-minute search said that 195... More»
Apr. 14, 2011 | 09:30 PDT | 16:30 UTC
Are there more Titans than Earths in the Milky Way?
Here's a really neat speculative paper that poses the question: might there be many Titan-like planets and moons, with atmospheres and liquid methane rain, rivers, and lakes, across the galaxy? It's an important question if you think that liquid... More»
Apr. 13, 2011 | 14:56 PDT | 21:56 UTC
Lots of great stuff in the latest Cassini data release
I've got some lovely pictures from Saturn to show you! Every three months, the Cassini mission dumps gigabytes worth of precious Saturn data into the Planetary Data System, and the latest gift came on April 1. This particular pile of data, which... More»
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