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Collaboration Between OSIRIS-REx and Hayabusa-2

Posted by Dante Lauretta on 2014/10/20 10:35 CDT

The University of Arizona (UA) hosted representatives of the Hayabusa-2 asteroid sample return mission to explore opportunities for collaboration with the OSIRIS-REx team.

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Video Introduction to Comet Siding Spring’s Near Miss at Mars

Posted by Bruce Betts on 2014/10/13 05:14 CDT

On October 19, 2014, Comet Siding Spring will fly very close to Mars. Here’s a 5 minute video introduction to get you up to speed on this planetary near miss, and some suggestions on how to find out more now, during, and after the encounter.

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What did Dawn learn at Vesta?

Posted by Emily Lakdawalla on 2014/10/09 03:53 CDT | 10 comments

It's now been two years since Dawn wrapped up its work at the second-largest asteroid. What else did we get from the Vesta encounter besides great photos? Recently, I asked Dawn's deputy project scientist, Carol Raymond, for help in summarizing a few of the big things Dawn taught us.

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Two Eclipses in October

Posted by Bruce Betts on 2014/10/06 01:09 CDT

October 2014 brings big sky fun: a total lunar and partial solar eclipse, both visible from North America. The lunar eclipse will also be visible from most areas around the Pacific Ocean. Here is info on how to observe these eclipses.

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Preparing for A-MAVEN Science!

Posted by Karl Battams on 2014/10/03 10:56 CDT | 3 comments

How can we use MAVEN to learn about Comet Siding Spring, passing very close by Mars this month?

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All That is Known About Bennu

Posted by Dante Lauretta on 2014/09/24 11:01 CDT | 1 comment

The OSIRIS-REx Design Reference Asteroid (DRA) document is now available to the public. The DRA is a compilation of all that is known about the OSIRIS-REx mission target, asteroid (101955) Bennu.

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SHARAD: Delving Deep at Mars

Posted by Bill Dunford on 2014/09/22 09:41 CDT

Some of Mars' most important secrets are hiding beneath the surface.

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Three Major Volcanic Eruptions Observed On Io in the Span of Two Weeks

Posted by Jason Perry on 2014/08/12 09:40 CDT | 1 comment

Jason Perry brings us a report on recent ground-based observations that shed new light on the most powerful of Io’s volcanic eruptions.

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Comet Siding Spring: Risk Assessment

Posted by Karl Battams on 2014/08/07 01:29 CDT | 6 comments

On October 19, 2014, Comet Siding Spring is going to have an extremely close encounter with the planet Mars. The bottom line: it seems most likely that our Martian spacecraft will be absolutely fine.

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The Osirian Asteroid Family

Posted by Dante Lauretta on 2014/07/28 02:04 CDT

The asteroid community recently gathered in Helsinki, Finland for the 12th Asteroids, Comets, and Meteors Conference. As this meeting showed, one of the hottest topics in asteroid science is the study of asteroid families.

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On the masses and motions of mini-moons: Pandora's not a "shepherd," but Prometheus still is

Posted by Emily Lakdawalla on 2014/07/04 12:04 CDT | 4 comments

As Cassini celebrates 10 years at Saturn, we're beginning to see its long-term observations of Saturnian moons bear fruit. A surprising new result: While Prometheus exerts control over the F ring and Atlas, Pandora -- long thought to be a shepherd of the F ring -- does not.

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Hubble to the rescue! The last-ditch effort to discover a Kuiper belt target for New Horizons

Posted by Emily Lakdawalla on 2014/06/17 11:59 CDT | 5 comments

Will New Horizons have a mission after Pluto? Ground-based searches have failed to turn up anything that New Horizons can reach. Now Hubble is joining the search, but time is running out: a discovery must be made within the next two months.

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The OSIRIS-REx Design Reference Mission

Posted by Dante Lauretta on 2014/06/12 06:18 CDT

This week the OSIRIS-REx team gathered at the Lockheed Martin facility in Denver to perform a “Design Reference Mission (DRM)” walkthrough. The DRM is basically the battle plan for OSIRIS-REx for accomplishing our goal of returning pristine samples from asteroid Bennu.

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How CRISM picks the pixels that guide Opportunity's travels

Posted by Emily Lakdawalla on 2014/06/05 03:29 CDT | 4 comments

How scientists are working with CRISM, an aging but still exceptional spectrometer on Mars Reconnaissance Orbiter, to find the rocks where Opportunity's work will tell the story of ancient water on Mars.

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A GRB in M31...or not

Posted by Philip Evans on 2014/05/28 11:21 CDT

The Twittersphere has been alive with speculation about a Gamma Ray Burst in the nearby galaxy M31. The problem is, there was never a claim of such an event, and it turns out that the tentative result that triggered this story was overstated.

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Will we find signs of tectonics on Pluto? And what would that mean?

Posted by Joseph O'Rourke on 2014/05/26 09:45 CDT | 1 comment

Joseph O’Rourke summarizes a recently submitted paper on tectonic activity on Pluto after the Charon-forming impact.

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One Night Only, a New Meteor Shower that May Be Spectacular?

Posted by Bruce Betts on 2014/05/22 04:36 CDT | 3 comments

A new meteor shower, the Camelopardalids, will be peaking Friday night/Saturday morning (May 23/24). Especially if you are in North America, you are well positioned to see what may (or may not) be a spectacular show. In either case, scientists will learn about a comet’s history, and you can have a fun night looking at the sky.

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Complete 2014 Astronomy Course Online

Posted by Bruce Betts on 2014/05/19 11:05 CDT | 6 comments

Bruce Betts has completed the lectures for his online 2014 Introduction to Planetary Science and Astronomy Course at CSUDH: all are online and you can earn a Certificate of Achievement for watching them.

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What’s Seeping on Mars? Recurring Slope Lineae

Posted by Matthew Chojnacki on 2014/05/13 09:53 CDT | 13 comments

HiRISE team member Matt Chojnacki tells us about the discovery and formation of these mysterious features forming on Mars in the present day.

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Intro Astronomy 2014. Class 13: Galaxies, the Universe, Life

Posted by Bruce Betts on 2014/05/08 01:17 CDT

Discover the Universe including the Big Bang, dark matter, dark energy, galaxies, life and more in this video of class 13 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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