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Intro Astronomy Class 2: How We Explore Space
Easy Things to See in the Night Sky, and the Electromagnetic Spectrum

Posted by Bruce Betts on 2014/02/18 05:50 CST

Learn easy things to look for in the night sky, and about the electromagnetic spectrum from gamma rays to radio waves in the video of class 2 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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What are Mercury's hollows?

Posted by Emily Lakdawalla on 2014/02/18 09:33 CST | 10 comments

I've been fascinated by Mercury's hollows ever since MESSENGER discovered them. Two recent papers look at where they are found to try to figure out how they form.

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Intro Astronomy Class 1: Tour of the Solar System

Posted by Bruce Betts on 2014/02/11 05:53 CST | 1 comment

Take a tour of the Solar System in the video of class 1 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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The New Cosmos Has a New Trailer

Posted by Casey Dreier on 2014/01/30 01:14 CST | 4 comments

Fox just released a new trailer for Cosmos: A Space-Time Odyssey, which will debut March 9th and feature Neil deGrasse Tyson as host.

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How to get a satellite to geostationary orbit

Posted by Jason Davis on 2014/01/17 09:24 CST | 8 comments

Mike Loucks helps provide a beginner's walk-through of the orbital mechanics behind geosynchronous and geostationary satellites.

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Polar vortices across the solar system

Posted by Emily Lakdawalla on 2014/01/09 11:49 CST | 2 comments

Earth's polar vortex has been in the American news all week. But we're not the only planet that has one; basically every world that has an atmosphere has a polar vortex. Here are lots of pretty pictures and animations of polar vortices.

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Lunar Reconnaissance Orbiter Diviner maps geologic context of Chang'e 3 landing site

Posted by Emily Lakdawalla on 2014/01/08 01:53 CST | 1 comment

The LRO Diviner Lunar Radiometer has been mapping the entire Moon on a nearly continuous basis since July, 2009. The Diviner team has produced maps of the thermal behavior and and a range of derived quantities at Chang’e 3 landing site that are described in this post.

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Planetary Radio: NEOWISE PI Amy Mainzer
NEOWISE has reawakened to discover more asteroids and comets. The mission leader thanks the amateur astronomers who follow up.

Posted by Mat Kaplan on 2014/01/01 12:56 CST | 1 comment

NEOWISE has reawakened to discover many more asteroids and comets. The mission leader thanks the amateur astronomers who follow up on these discoveries.

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Habitability, Taphonomy, and Curiosity's Hunt for Organic Carbon

Posted by John Grotzinger on 2013/12/21 08:47 CST | 4 comments

Lots of people ask questions about how the Curiosity mission, and future missions, will forge ahead to begin with looking for evidence of past life on Mars. There is nothing simple or straightforward about looking for life.

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A Tale of Two Posters: Sediment on Mars and Searching Jupiter's Rings

Posted by Mark Hilverda on 2013/12/12 07:39 CST

A close look at two international planetary science poster presentations from the 2013 AGU Fall Meeting featuring sediment experiments to better understand Martian geomorphology and Juno's plans for exploring Jupiter's ring system.

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Watch this with your kids: Asteroid Fact versus Fiction

Posted by Emily Lakdawalla on 2013/12/12 04:52 CST

A cute video from the OSIRIS-REx mission in the style of "AsapSCIENCE" uses a whiteboard and stop-motion animation to separate asteroid fact from fiction.

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The Plumes of Europa

Posted by Leigh Fletcher on 2013/12/12 12:01 CST | 12 comments

2013 has been a rather exciting year for Europa scientists. Today's exciting news: the Hubble Space Telescope discovery of water vapor plumes from the south pole of this icy moon.

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Enceladus huffs and puffs: plumes vary with orbital longitude

Posted by Emily Lakdawalla on 2013/12/11 07:22 CST | 2 comments

In which I finally get around to writing about a paper published last August: Enceladus' plumes sometimes spout more and sometimes spout less, depending on where Enceladus is in its orbit. This discovery was enabled by Cassini's longevity at Saturn, and we'll be able to follow up on it, as long as Cassini is allowed to complete its mission.

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Curiosity results at AGU: Gale crater rocks are old, but have been exposed recently

Posted by Emily Lakdawalla on 2013/12/09 08:31 CST | 4 comments

In a Martian first, the Curiosity science team has measured the age of a Martian rock, in two totally different ways. They presented the result at the 2013 meeting of the American Geophysical Union.

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Comet ISON Wrap Up
A Tail of Cat-Possums and the Undead

Posted by Bruce Betts on 2013/12/05 05:49 CST

Comet ISON captivated our world, and many of our world’s robotic emissaries for many months. But, alas, poor ISON is dead -- again. Here I wrap up our enthusiastic coverage of this multi-morphing zombie comet that tried to survive and re-survive as it came within one solar diameter of the Sun.

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Mars' chemical history: Phyllosian, Theiikian, Siderikian, oh my

Posted by Emily Lakdawalla on 2013/12/05 01:08 CST | 4 comments

I'm returning to the deep dive into the literature that began with articles about lunar basins and then explored the geologic time scales of Earth, Moon, and Mars. Now it's time to catch up to the last decade of Mars research and learn what "phyllosian", "theiikian", and "siderikian" eras are.

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Comet ISON live blog

Posted by Emily LakdawallaBruce Betts on 2013/12/05 10:00 CST | 10 comments

Comet ISON reached perihelion at 18:25 UT (10:25 PT) on November 28. It's an event that's was watched around the world, accompanied by tons of commentary and streams of photos. We will update this blog entry periodically with links to all the resources that we hear of for following the comet's progress.

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Multiple views of comet ISON from solar-observing spacecraft

Posted by Emily Lakdawalla on 2013/12/02 07:50 CST | 6 comments

When comet ISON passed through perihelion last week, solar observing spacecraft had a ringside view. Here are several animations of ISON's perilous passage from the SOHO and two STEREO spacecraft.

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Schrödinger's Comet

Posted by Karl Battams on 2013/11/28 09:54 CST | 9 comments

After impressing us yesterday, comet ISON faded dramatically overnight, and left us with a comet with no apparent nucleus in the SOHO/LASCO C2 images. As the comet plunged through the solar atmosphere, and failed to put on a show in the SDO images, we understandably concluded that ISON had succumbed to its passage and died a fiery death. Except it didn't. Well, maybe...

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Comet ISON: Your Half-time Report

Posted by Karl Battams on 2013/11/26 10:04 CST | 1 comment

I am heading out to Kitt Peak to join my fellow CIOC-ers Matthew and Casey for perihelion observations of Comet ISON, and I find myself having an early moment of reflection.

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