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Latest Guest Blog Posts

Like A Bad Penny: Methane on Mars

Posted by Nicholas Heavens on 2014/12/16 04:07 CST | 2 comments

With the announcement of Curiosity's detection of methane on Mars, Nicholas Heavens gives us a guide to the history of methane detection on Mars, a discussion of its scientific significance, and a few things to consider when hearing about and asking about the detection.

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The Planetary Society’s Global Volunteer Network

Posted by Kate Howells on 2014/12/12 10:27 CST | 1 comment

The Planetary Society’s Global Volunteer Network has been busy these past few months!

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Pretty pictures of the Cosmos: Strange and spooky

Posted by Adam Block on 2014/12/12 10:25 CST | 1 comment

Award-winning astrophotographer Adam Block shares his haunting images of three different types of nebulae.

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New Churyumov-Gerasimenko Shapemodel!

Posted by Mattias Malmer on 2014/12/12 09:00 CST | 1 comment

Mattias Malmer shares his latest shape model of Comet 67P/Churyumov–Gerasimenko, created using data from the Rosetta spacecraft.

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The YORP Effect and Bennu

Posted by Dante Lauretta on 2014/12/11 05:48 CST

The YORP effect is a phenomenon that affects the rotation rate and pole orientation of an asteroid. YORP is an acronym that combines four scientist’s names: Yarkovsky, O’Keefe, Radzievskii, and Paddack.

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Revisiting Uranus with Voyager 2

Posted by Björn Jónsson on 2014/12/10 10:44 CST | 2 comments

Amateur image processor Björn Jónsson brings us some new views of Uranus from reprocessed Voyager 2 data.

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What Happens When Space Projects Go Over Budget? The Curious Case of MSL’s Overrun

Posted by Jason Callahan on 2014/12/08 04:44 CST | 1 comment

Jason Callahan takes a detailed look at the effects of Curiosity's cost overruns on NASA's budget.

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New Views of Ancient Martian Landscapes

Posted by Bill Dunford on 2014/12/08 11:21 CST | 5 comments

The Mars Reconnaissance Orbiter just keeps delivering remarkable scenes from the Red Planet.

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Mars Exploration Rovers Update: Opportunity Roves from Wdowiak Ridge into Network of Fractures

Posted by A.J.S. Rayl on 2014/12/03 12:13 CST

Last month, the Earth's longest-lived and most traveled robot on another planet drove into a network of fractures the likes of which the scientists had never seen before on Mars and wound up working there through the end of the month – and then something not completely unexpected happened.

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Selecting the Next Creative Idea for Exploring the Solar System

Posted by Van Kane on 2014/12/01 07:39 CST

With the release of the official Announcement of Opportunity (AO) early in November, NASA has officially begun the competition to select its next low cost ($450M) Discovery program planetary mission. Because planetary scientists are free to propose missions to any destination in the solar system other than the sun and Earth, these competitions bring out the creativity in the planetary science program.

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