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Blogs

Dawn Journal

Dawn Journal: Scary-Good Ion Propulsion

Posted by Marc Rayman on 2012/10/31 12:34 CDT

Dawn continues to raise its orbit en route to its 2015 date with Ceres. Also, Marc prepares his high-energy Halloween costume.

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Dawn Journal: Five years since launch

Posted by Marc Rayman on 2012/09/27 03:37 CDT | 2 comments

On the fifth anniversary of its launch, Dawn is on the way to Ceres.

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Dawn journal: Back to interplanetary space

Posted by Marc Rayman on 2012/09/06 12:49 CDT

After more than a year in orbit, Dawn has left Vesta, beginning the spacecraft's journey to Ceres.

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Dawn journal: The long, slow goodbye

Posted by Marc Rayman on 2012/07/26 12:40 CDT | 1 comment

Dawn has completed the final intensive phase of its exploration of Vesta, and it has now begun its gradual departure for Ceres.

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Dawn Journal: Seeing Vesta in a New Light

Posted by Marc Rayman on 2012/07/06 02:33 CDT | 1 comment

Once again Dawn is diligently mapping Vesta, circling the ancient protoplanet about twice a day, observing the signatures of Vesta's tortured history.

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Dawn Journal: Riding gravitational currents to HAMO2

Posted by Marc Rayman on 2012/06/05 03:30 CDT

Dawn is beginning its departure from Vesta, spiraling upward from its low-altitude mapping orbit to a higher one from which it will map north polar terrain not visible during the earlier mapping orbit.

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Dawn Journal: Rising from a happily long LAMO

Posted by Marc Rayman on 2012/05/03 03:39 CDT | 3 comments

Marc Rayman's monthly check-in with the Dawn mission describes the achievements of the spacecraft in its Low-Altitude Mapping Orbit (including near-global high-resolution imaging!) and explains what's next.

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Dawn Journal: Saluting the Sun

Posted by Marc Rayman on 2012/03/29 05:19 CDT

On April 18, Dawn will attain its greatest separation yet from Earth, nearly 520 million kilometers (323 million miles) or more than 3.47 astronomical units (AU). Well beyond Mars, fewer than a dozen spacecraft have ever operated so far from Earth. At this extraordinary range, Dawn will be nearly 1,400 times farther than the average distance to the Moon (and 1,300 times farther than the greatest distance attained by Apollo astronauts 42 years ago). The deep-space ship will be well over one million times farther from Earth than the International Space Station and Tiangong-1.

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Dawn Journal: Bonus time at low altitude

Posted by Marc Rayman on 2012/02/29 02:43 CST

Dawn is continuing its exploits at Vesta, performing detailed studies of the colossal asteroid from its low altitude mapping orbit (LAMO).

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Dawn Journal: How does Dawn know where "down" is?

Posted by Marc Rayman on 2012/01/30 01:23 CST

Dawn Journal: How does Dawn know where "down" is?

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