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8th Mars Report: Was Ancient Mars Warm and Wet or Cold and Icy?

Posted by Abigail Fraeman on 2014/07/29 02:08 CDT | 3 comments

One of the hot topics of the 8th International Conference on Mars was the nature of Mars' ancient past. Abigail Fraeman reports on our updated view of whether Mars was ever warm and wet.

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Intro Astronomy Class 5: Venus (continued) and Mars

Posted by Bruce Betts on 2014/03/06 10:49 CST

Continue exploring Venus and begin looking at Mars in this video of class 5 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Intro Astronomy Class 4: Eclipses, Mercury, Venus-Earth-Mars Atmospheres, Venus

Posted by Bruce Betts on 2014/02/28 01:30 CST

This video of class 4 of Bruce Betts' Introduction to Planetary Science and Astronomy class discusses eclipses, Mercury, Venus, and a comparison of the atmospheres of Venus, Earth, and Mars.

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New Views of Martian Weather

Posted by Bill Dunford on 2014/01/20 12:03 CST | 3 comments

The latest postcards from Mars Express feature cloudy skies.

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The Mists of Mars

Posted by Bill Dunford on 2013/12/09 10:58 CST | 3 comments

Two grand canyons fill with fog, one on Earth and one on Mars.

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Science Against the Storm

Posted by Bill Dunford on 2013/11/11 09:07 CST

In the face of disaster, the search for answers and ways to help continues, on the ground and in space.

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DPS 2013: Tidbits from Titan

Posted by Emily Lakdawalla on 2013/10/09 05:19 CDT | 8 comments

I attended a few talks at the Division for Planetary Sciences meeting today that concerned Titan's origin and interesting surface, and then one in the afternoon about the atmosphere.

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Mars' valley networks tell us of a dry, then wet, then dry Mars

Posted by Emily Lakdawalla on 2013/09/10 03:43 CDT | 1 comment

Was there rainfall on Mars? Recent work mapping valley networks suggests there probably was -- but only for about 200 million years. What does this mean for life, and the Curiosity mission?

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Pluto's atmosphere does not collapse

Posted by Emily Lakdawalla on 2013/09/06 11:07 CDT | 2 comments

Just four months ago I posted about a paper recently published by Leslie Young and coauthors that described three possible scenarios for Pluto's atmosphere. Yesterday, Cathy Olkin, Leslie Young, and coauthors posted a preprint on arXiv that says that only one of those scenarios can be true. And it's a surprising one. The title of their paper says it all: "Pluto's atmosphere does not collapse."

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Caution: Spacecraft Under Construction
Visiting JPL's high bay clean room with NASA Administrator Charles Bolden

Posted by Mat Kaplan on 2013/08/20 10:39 CDT | 1 comment

Join Emily Lakdawalla and Mat Kaplan inside JPL's High Bay 1, where two Earth-revealing missions are being readied for launch.

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Beautiful science by Elektro-L

Posted by Vitaliy Egorov on 2013/08/08 03:54 CDT | 7 comments

Six months ago, I wrote about the Russian weather satellite Elektro-L, which has more than two years of successful experience in the geostationary orbit. Then I promised that I would be here to share the materials that we collected. I think it's time to deliver on the promise.

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The Ancient Snows of Mars on Planetary Radio
Grad student Kat Scanlon leads research indicating precipitation may have helped shape the surface of the red planet

Posted by Mat Kaplan on 2013/08/06 10:20 CDT

Kat Scanlon tells Planetary Radio that Hawaii and Mars have more in common than you might think.

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Happy 32! Happy New Mars Year!

Posted by Emily Lakdawalla on 2013/07/31 01:45 CDT | 4 comments

They're too far apart to have a party, but today Curiosity and Opportunity could have rung in the New Mars Year. Today Mars reached a solar longitude of zero degrees and the Sun crossed Mars' equator, heralding the arrival of spring in the northern hemisphere and autumn in the southern hemisphere.

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Tides of light and ice: Water and rock made from snowmelt on Mars

Posted by Emily Lakdawalla on 2013/04/17 01:29 CDT | 4 comments

A recently published paper proposes that much of the sedimentary rock on Mars formed during rare, brief periods of very slight wetness under melting snow.

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Curiosity update, sol 117: Progress report from AGU

Posted by Emily Lakdawalla on 2012/12/05 07:58 CST | 4 comments

Monday was the big Curiosity day at the fall meeting of the American Geophysical Union. A morning press briefing was followed by an afternoon science session. I traveled to San Francisco briefly just to attend those two events. Here's my notes on the first science reports from the mission.

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Nifty animation: Dust in the air for Curiosity

Posted by Emily Lakdawalla on 2012/11/21 11:21 CST

An animation of Curiosity photos shows changes in the weather.

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Watching the slow shift of seasons on Titan

Posted by Emily Lakdawalla on 2012/11/06 02:45 CST | 1 comment

A sharp-eyed amateur noticed two images of Titan taken 20 months apart from nearly exactly the same perspective, and they illustrate how the shifting of Saturn's seasons has brought change to Titan's atmosphere.

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Hurricane Sandy: Thanks for lives saved already

Posted by Emily Lakdawalla on 2012/10/29 11:32 CDT

Today hurricane Sandy is a major threat to life and property across the west coast of the northern Atlantic ocean. I just want to give thanks in advance to all the people who have devoted their careers to making sure that Americans have sufficient warning of devastating, unstoppable weather events like this one.

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DPS 2012: The most detailed images of Uranus' atmosphere ever

Posted by Emily Lakdawalla on 2012/10/22 04:14 CDT | 3 comments

New ground-based images of Uranus show more finely detailed structure than any photos I have ever seen.

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New spots on Uranus

Posted by Emily Lakdawalla on 2012/08/22 05:42 CDT | 5 comments

New Hubble photos show that Uranus has both dark and bright spots!

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