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Comet Siding Spring Mars encounter: One Mars Express plan becomes two

Posted by ESA Mars Express Team on 2014/09/17 10:44 CDT

The Mars Express Flight Control Team at ESOC have been actively preparing for the flyby of comet C/2013 A1/Siding Spring on October 19. Initial estimates gave the possibility that Mars Express might be hit by 2 or 3 high-speed particles. Happily, additional observations by ground and space telescopes have shown the risk to be much lower – and perhaps even as low as zero. In today's blog post, the team explain how this (happy!) real-life, real-time development is affecting their preparations for fly-by.

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So Close and Yet So Far: Why isn't Siding Spring going to sandblast Mars?

Posted by Tony Farnham on 2014/09/09 09:02 CDT | 5 comments

Comet Siding Spring is going to make a very close approach to Mars in October. Any comet dust that reaches Mars has the potential to inflict significant damage on the spacecraft orbiting the planet. As it turns out, however, Mars and its orbiters are likely to see very few, if any, impacts. Why?

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Growth. Peak. Collapse. Planetary exploration from 1959 - 1989

Posted by Jason Callahan on 2014/09/08 11:24 CDT | 2 comments

The first three decades of planetary exploration tell a story that sounds all-too-familiar to modern day space advocates. Growth, peak, and then collapse of hard-earned capability. This is the story of planetary science for the first half of its existence.

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Mars Exploration Rovers Update: Opportunity Suffers Unwanted Computer Reboots, Hunkers Down for Reformat

Posted by A.J.S. Rayl on 2014/09/03 12:19 CDT

After setting the new off-Earth rover distance record in July, Opportunity roved on in August, driving south along the eastern edge of Endeavour Crater's western rim to Wdowiak Ridge on its journey to the next big destination, Marathon Valley.

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Dawn Journal: From HAMO to LAMO and Beyond

Posted by Marc Rayman on 2014/09/02 06:40 CDT | 10 comments

Marc Rayman updates us on the Dawn mission, its plans from high to low altitude mapping orbits at Ceres, and what the intrepid spacecraft will pursue next.

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The Pivotal Discovery You’ve Probably Never Heard Of

Posted by Karl Battams on 2014/08/29 02:09 CDT | 5 comments

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 | 5 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 | 1 comment

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 | 9 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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