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Blogs

Dawn Journal

Dawn Journal: Hydrazine Haste Makes Waste

Posted by Marc Rayman on 2012/12/05 11:02 CST | 1 comment

By saving fuel, Dawn will arrive at Ceres in 2015 with about half of the 45.6-kilogram (101-pound) hydrazine supply it had when it rocketed away from Cape Canaveral.

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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. Well beyond Mars, fewer than a dozen spacecraft have ever operated so far from Earth.

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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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