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Latest Guest Blog Posts

The Pivotal Discovery You’ve Probably Never Heard Of

Posted by Karl Battams on 2014/08/29 02:09 CDT

Karl Battams highlights the historic discovery, by an Air Force satellite, of a sungrazing comet.

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The Rise and Fall (and Rise and Fall) of Planetary Exploration Funding

Posted by Jason Callahan on 2014/08/29 02:06 CDT | 2 comments

NASA has explored the solar system since the 1960s, but it has rarely been the top priority for the space agency. Jason Callahan breaks down how planetary science has been funded over the years within NASA's larger budget.

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The Birth of the Modern Universe

Posted by Amir Alexander on 2014/08/29 12:29 CDT

Amir Alexander reviews Alan Hirshfeld's newest book, "Starlight Detectives: How Astronomers, Inventors, and Eccentrics Discovered the Modern Universe."

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Canadian Mars Analogue Mission: Field Report, Week 2

Posted by Tanya Harrison on 2014/08/28 11:17 CDT

Tanya Harrison wraps up the final week of Mars sample return analogue mission operations at the Canadian Space Agency.

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The Competition for Dollars

Posted by Jason Callahan on 2014/08/27 01:20 CDT | 7 comments

We all know NASA needs more money to achieve its goals. But competition for money is intense within the U.S. federal government, and two trends have made it harder for NASA to get what it needs.

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Europa: How Less Can Be More

Posted by Van Kane on 2014/08/26 06:55 CDT | 6 comments

Van Kane explains three factors that make exploring Europa hard—factors that can make a mission concept that seems like less actually be more.

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Comet Flyby Missions for Mars Rovers

Posted by Mark Lemmon on 2014/08/21 10:19 CDT | 2 comments

On October 19, the Mars rovers — like their orbiting cousins — will become comet flyby missions. Comet C/2013 A1 (Siding Spring) will pass within 140,000 km of Mars.

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Stardust@home Finds Some Stardust

Posted by Amir Alexander on 2014/08/21 07:48 CDT

What’s new at Stardust@home, the groundbreaking program that asked volunteers to help find interstellar dust particles collected by the spacecraft Stardust.

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Canadian Mars Analogue Mission: Field Report, Week 1

Posted by Tanya Harrison on 2014/08/20 11:02 CDT | 1 comment

Tanya Harrison reports on Canada's efforts to simulate a Mars sample return mission here on Earth.

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New Postcards from Mars

Posted by Bill Dunford on 2014/08/18 10:34 CDT | 7 comments

The latest snaphots from the "Mars Webcam" include something special.

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