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Blogs

Blog Archive

 

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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Pretty pictures of the Cosmos: Interacting galaxies

Posted by Adam Block on 2014/07/02 10:27 CDT

Award-winning astrophotographer Adam Block showcases some of his stunning images of what happens when galaxies get a little too close to each other.

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A close look at Saturn's closest moons

Posted by Emily Lakdawalla on 2014/06/26 08:13 CDT | 1 comments

A new composite image of the eight named moons that orbit closest to Saturn, and a list of all the best Cassini observations of these moons.

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Of Rings and Resolution

Posted by Bill Dunford on 2014/06/23 09:36 CDT | 3 comments

Seeing Saturn before and after Cassini.

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Pretty pictures of the Cosmos

Posted by Adam Block on 2014/06/06 03:01 CDT

Award-winning astrophotographer Adam Block shares some of his recent work.

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Tracks in the Wilderness

Posted by Bill Dunford on 2014/06/03 11:17 CDT

Pioneer trails extend all the way to Mars.

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Curiosity update, sols 631-644: On the road again

Posted by Emily Lakdawalla on 2014/05/30 06:51 CDT | 6 comments

The last couple of weeks have seen Curiosity return to the business of making steady headway toward Murray Buttes and, beyond them, Mount Sharp. Eight of the last 14 sols have seen drives ranging in length from 30 to 104 meters, racking up a total of more than half a kilometer. They are now occasionally working a shortened planning timeline that allows them to squeeze more drive sols into Curiosity's schedule.

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Lunar Reconnaissance Orbiter's Ongoing Adventure

Posted by Samuel Lawrence on 2014/05/29 06:16 CDT | 5 comments

A few people think that when it comes to the Moon, because we’ve “been there, and done that,” there is nothing new left to discover. But that viewpoint could not be farther from the truth!

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Deep Impact's last images

Posted by Emily Lakdawalla on 2014/05/27 07:13 CDT

Today I received an email notification of new public releases of some image data sets. I always love seeing new public space image data, but this notification was bittersweet: it included the first public release of the very last image data returned to Earth by Deep Impact, of a distant comet ISON.

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New orbital images of Curiosity landing site from Mars Express and HiRISE

Posted by Emily Lakdawalla on 2014/05/23 06:30 CDT | 4 comments

Mars Express and Mars Reconnaissance Orbiter are keeping their eyes in the sky on Curiosity. There's a nice newly public color image of all of Gale Crater from HiRISE, and two new HiRISE images within the Curiosity landing site.

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Lovely, live, continuous, high-definition video of Earth

Posted by Emily Lakdawalla on 2014/05/20 05:19 CDT | 3 comments

Have you ever wished you could enjoy the astronauts' view of Earth from the Space Station? Now, you can. Just go to the live feed from the High Definition Earth Viewing (HDEV) experiment, crank it up to its highest resolution, let it take over your monitor, and watch Earth spin by.

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Dust on, dust off: Before-and-after comparisons of rover decks on Mars

Posted by Emily Lakdawalla on 2014/05/19 04:16 CDT | 6 comments

Curiosity and Opportunity self-portraits show one rover accumulating dust, the other losing it. Check out these cool before-and-after comparisons.

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Pretty pictures: Rosetta's comet is now acting like one!

Posted by Emily Lakdawalla on 2014/05/15 10:17 CDT | 5 comments

New photos from ESA's comet-chaser show its destination comet, 67P/Churyumov-Gerasimenko, developing a coma.

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A new Earthrise over the Moon from Lunar Reconnaissance Orbiter's pushframe camera

Posted by Emily Lakdawalla on 2014/05/13 11:53 CDT

Earth's brilliant colors shine above the drab lunar horizon in this new "Earthrise" photo from the Lunar Reconnaissance Orbiter. An animation that accompanied the image release helped me to write an explainer on how pushframe cameras like Lunar Reconnaissance Orbiter's Wide-Angle Camera works.

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Another Day in the Solar System

Posted by Bill Dunford on 2014/05/12 09:56 CDT | 1 comments

One day, five worlds.

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Illustris: A realistic virtual universe

Posted by Mat Kaplan on 2014/05/08 02:46 CDT | 5 comments

Watch another universe unfold as simulated by Illustris, using a model that required 8,000 processors running in parallels 3 months to create!

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A Martian analemma

Posted by Emily Lakdawalla on 2014/05/06 01:31 CDT | 4 comments

A Mars year's worth of Sun images from Opportunity demonstrates Mars' orbital motions as reflected in the changing apparent position of the Sun: the analemma.

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Image processing trick: Removing interline transfer smear from Curiosity photos

Posted by Emily Lakdawalla on 2014/05/01 03:27 CDT | 2 comments

Curiosity took a new self-portrait on sol 613. This post contains a tip for would-be Curiosity image processors on how to make their Curiosity mosaics better: removing the smearing effect of bright objects in MAHLI photos.

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Another Pale Blue Dot — Uranus Spied By Cassini

Posted by Val KlavansIan Regan on 2014/04/30 06:53 CDT | 1 comments

The Cassini mission has already returned an array of images of other solar system members from Saturn orbit: Earth (and the Moon), Venus, Mars, and Jupiter. It’s time to add another world to that list!

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Intro Astronomy 2014. Class 11: Exoplanets and Solar System Origin and Formation

Posted by Bruce Betts on 2014/04/25 04:30 CDT

Learn about the formation and origin of the Solar System and go beyond our neighborhood to investigate exoplanets (planets around other stars) in this video of class 11 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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