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Stories, updates, insights, and original analysis from The Planetary Society.

Cosmos with Cosmos Episode 12: Encyclopedia Galactica

Cosmos returns in fine form in its penultimate episode. Sagan explores the historical and scientific precedents for the search for extraterrestrial life (SETI) and our human desires to not be alone in the universe.

Super-close supernova in M82

The astronomy world is all a-twitter this morning over the discovery of a new supernova in M82, a galaxy that's in our astronomical backyard,

Cosmos with Cosmos Episode 9: The Lives of the Stars

This episode highlights the other big idea in Cosmos: that we are profoundly connected with the universe around us. Our constituent parts are forged in the bellies of massive stars; we exist through their deaths.

Return of the Pale Blue Dot

You can be part of a planetwide group photo as Cassini and MESSENGER turn their cameras Earthward on July 19.

Goodnight, Herschel Space Observatory

The European Space Agency’s Herschel Space Observatory received its final commands yesterday, having depleted the liquid helium required to make its infrared observations.

Astronomy Enters a New Era

A live conversation about just a few of the powerful new instruments that will revolutionize our knowledge of the cosmos once again.

Atacama Diary for March 2, 2013--ALMA Explained

The second in a series of audio blogs chronicling my trip to the driest spot on Earth, Chile's Atacama desert, to see the inauguration of the ALMA Observatory. Al Wootten and Alison Peck tell the story of ALMA.

Comet to whiz past Mars in October 2014

A recently discovered comet, C/2013 A1 (Siding Spring), is going to be passing very close to Mars on October 19, 2014. Does it pose a risk to spacecraft?

Stars, and stars, and stars: pretty pictures from the European Southern Observatory

My solar system chauvinism is well-established, but I am as much a sucker for beautiful astrophotos as the rest of you. Once in a while I get a media advisory from the European Southern Observatory about a new pretty picture posted on their website, and then I inevitably lose an hour following links to one stunner after another.

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