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Blog Archive


Dawn Journal: Ceres Orbit Insertion!

Posted by Marc Rayman on 2015/03/06 10:32 CST | 8 comments

Dawn's Chief Engineer, Marc Rayman, gives an update on the mission's highly anticipated arrival at Ceres.

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Seeing Ceres: Then and Now

Posted by Paul Gilster on 2015/03/06 09:33 CST | 1 comments

Technology writer Paul Gilster shares his interest in how we depict astronomical objects, focusing on the dwarf planet Ceres.

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Watch Ceres rotate: A guide to interpreting Dawn's images

Posted by Emily Lakdawalla on 2015/03/03 02:55 CST | 14 comments

NASA held a press briefing on the Dawn mission yesterday, sharing some new images and early interpretations of them. I see lots of things that intrigue me, and I'm looking forward to Dawn investigating them in more detail. I invite you to check out these photos yourself, and offer you some guidance on things to look for.

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At last, Ceres is a geological world

Posted by Emily Lakdawalla on 2015/02/25 09:42 CST | 25 comments

I've been resisting all urges to speculate on what kinds of geological features are present on Ceres, until now. Finally, Dawn has gotten close enough that the pictures it has returned show geology: bright spots, flat-floored craters, and enigmatic grooves.

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Dawn Journal: Ceres' Deepening Mysteries

Posted by Marc Rayman on 2015/02/25 02:00 CST | 15 comments

Even as we discover more about Ceres, some mysteries only deepen. Mission Director Marc Rayman gives an update on Dawn as it moves ever closer to its next target.

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Ceres coming into focus

Posted by Emily Lakdawalla on 2015/02/06 06:36 CST | 8 comments

The Dawn mission released new images of Ceres yesterday, taken on February 4, when Dawn had approached to within 145,000 kilometers. More details are coming into view, and they're fascinating. For one thing, there's not just one white spot any more: there are several.

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Ceres Coming Into View

Posted by Paul Schenk on 2015/02/03 05:23 CST | 1 comments

Dawn is on approach to Ceres, the largest of the asteroids, and is starting to resolve features.

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Dawn Journal: Closing in on Ceres

Posted by Marc Rayman on 2015/01/30 08:31 CST | 7 comments

Dawn's chief engineer Marc Rayman gives an update on the mission as it gets ever closer to its next target: The dwarf planet Ceres.

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Ceres: Just a little bit closer (and officially better than Hubble)

Posted by Emily Lakdawalla on 2015/01/27 06:26 CST | 5 comments

Last week's Dawn images of Ceres were just slightly less detailed than Hubble's best. This week's are just slightly better.

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New Dawn images of Ceres: comparable to Hubble

Posted by Emily Lakdawalla on 2015/01/20 09:06 CST | 9 comments

Dawn has captured a series of photos of a rotating Ceres whose resolution is very close to Hubble's, and they show tantalizing surface details.

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Year of the 'Dwarves': Ceres and Pluto Get Their Due

Posted by Paul Schenk on 2015/01/15 12:18 CST | 1 comments

This year we achieve the first exploration of these curious but fascinating objects. Paul Schenk explains what we may learn about them.

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Dawn Journal: History of Ceres

Posted by Marc Rayman on 2014/12/29 01:25 CST | 14 comments

As Dawn looks toward the new world of Ceres, Mission Director Marc Rayman looks back on Ceres' discovery.

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Ceres is round!

Posted by Emily Lakdawalla on 2014/12/05 02:44 CST | 3 comments

Okay, so the fact that Ceres is round is not news. It's still thrilling to see Ceres begin to come into focus as a round world.

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Dawn Journal: Ion thrusting (or not)

Posted by Marc Rayman on 2014/11/02 02:30 CST | 8 comments

Marc Rayman gives the latest update on the Dawn mission, focusing this time on the performance of its ion propulsion system.

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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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Dawn Journal: Survey Orbit at Ceres

Posted by Marc Rayman on 2014/06/03 09:59 CDT | 2 comments

This month Dawn's mission director Marc Rayman continues the preview of how Dawn will explore Ceres, this time in its survey orbit.

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Intro Astronomy Class 6: Mars (continued) and Asteroids

Posted by Bruce Betts on 2014/03/14 06:10 CDT

Continue exploring Mars and learn about asteroids in this video of class 6 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Pretty Picture: Three Wanderers

Posted by Emily Lakdawalla on 2014/03/12 12:34 CDT

With all the excitement happening on missions criscrossing the solar system, I often forget to enjoy the views of our solar system that we can achieve from home. Amateur astronomers don't make the same mistake. Here's a lovely photo that Stuart Atkinson sent me, captured last night from Kendal, England, showing four special wanderers.

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2015 will be the Year of the Dwarf Planet, and you need to tell people about it!

Posted by Emily Lakdawalla on 2014/03/05 07:00 CST | 11 comments

I am very excited about 2015, more so than I have been about any year since I started working at The Planetary Society. Dawn will enter orbit at Ceres, and New Horizons, which will fly past Pluto and Charon. But if we want this kind of exploration to continue, I'm challenging you, dear readers, to tell the world why such non-planetary worlds are compelling places to go exploring.

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Dawn Journal: Distant interplanetary adventurer

Posted by Marc Rayman on 2013/08/30 04:28 CDT | 1 comments

Traveling confidently and alone, Dawn continues to make its way through the silent depths of the main asteroid belt. The interplanetary adventurer is on its long journey to the uncharted dwarf planet Ceres, by far the largest of all asteroids.

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