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Meet our bloggers...CEO, Bill Nye, Emily Lakdawalla, Bruce Betts, Mat Kaplan, Casey Dreier, and a host of expert and entertaining voices from throughout our vast space community.

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New Horizons One Earth Message

Posted by Mark Washburn on 2015/04/24 02:08 CDT | 3 comments

The One Earth Message Project is going to send a message to the stars, and we invite members of the Planetary Society to join us in this historic endeavor.

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LightSail Readiness Tests Prepare Team for Mission Operations

Posted by Jason Davis on 2015/04/24 12:36 CDT | 3 comments

The LightSail team continues to prepare for the spacecraft's May test flight with a series of readiness simulations that mimic on-orbit operations.

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Can nuclear waste help humanity reach for the stars?

Posted by Tim Tinsley on 2015/04/23 04:07 CDT | 3 comments

With the shortage of plutonium-238 to power space missions, Europe has decided to focus on an accessible alternative material that could power future spacecraft: americium-241.

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Rosetta update: Two close flybys of an increasingly active comet

Posted by Emily Lakdawalla on 2015/04/21 03:07 CDT | 6 comments

In the two months since I last checked up on the Rosetta mission, the comet has heated up, displaying more and more jet activity. Rosetta completed very close flybys on February 14 and March 28, taking amazing photos. But comet dust is making navigation difficult, so the mission is now keeping a respectful distance from the comet and replanning its future path.

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Development of the OSIRIS-REx Sampling System: TAGSAM and the SRC

Posted by Dante Lauretta on 2015/04/21 04:55 CDT

The OSIRIS-REx team has been busy assembling and testing the Touch-and-Go Sample Acquisition Mechanism (TAGSAM) and the Sample Return Capsule (SRC).

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What Color Does the Internet Think Pluto Is?

Posted by Alex Parker on 2015/04/20 03:08 CDT | 2 comments

Astronomers have known for a long time that Pluto’s surface is reddish, so where did the common idea that Pluto is blue come from?

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The study team at JPL Will Present their Mars Program Concept at the 2015 Humans to Mars Summit

Posted by Casey Dreier on 2015/04/17 05:37 CDT

A study team at JPL will present their humans to Mars program concept at the Humans to Mars Summit and publish it as a peer-reviewed article in the New Space Journal.

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The Cosmic Microwave Oven Background

Posted by David Wilson on 2015/04/17 03:03 CDT | 2 comments

Over the past couple of decades the Parkes Radio Telescope in Australia has been picking up two types of mysterious signals, each lasting just a few milliseconds. The source of one of these signals may have finally been found—and an unexpected source at that.

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Pretty Pictures of the Cosmos: Life and Death in the Universe

Posted by Adam Block on 2015/04/17 11:28 CDT

Astrophotographer Adam Block brings us images showcasing the evolutionary cycles in our universe.

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New views of three worlds: Ceres, Pluto, and Charon

Posted by Emily Lakdawalla on 2015/04/16 03:17 CDT | 7 comments

New Horizons took its first color photo of Pluto and Charon, while Dawn obtained a 20-frame animation looking down on the north pole of a crescent Ceres.

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