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Dawn Journal: Staying at Ceres

Marc Rayman • July 30, 2016

The official end of Dawn's prime mission was June 30, but the valiant adventurer began its "extended mission" of performing more Ceres observations without missing a beat.

Dawn Journal: In the Details

Marc Rayman • June 08, 2016

Dawn is continuing to record the extraordinary sights on dwarf planet Ceres. The experienced explorer is now closer to the alien world than the International Space Station is to Earth.

Dawn Journal: A New Angle on Ceres

Marc Rayman • May 04, 2016

Since April 11, instead of photographing the scenery directly beneath it, Dawn has been aiming its camera to the left and forward as it orbits and Ceres rotates to map more of the dwarf planet.

Opposition surge comet

Emily Lakdawalla • April 12, 2016

Today, the Rosetta OSIRIS team's Image of the Day is this highly unusual view of the comet with the Sun very nearly behind the spacecraft.

LPSC 2016: Differentiated meteorites provide a glimpse of the early solar system and planets

Helen Ashcroft • April 11, 2016

This year's Lunar and Planetary Science Conference included a session devoted to a group of rocks from space called differentiated meteorites, and their proposed parent bodies.

Dawn Journal: Sharper Views of Ceres

Marc Rayman • April 01, 2016

One year after taking up its new residence in the solar system, Dawn is continuing to witness extraordinary sights on dwarf planet Ceres. Mission Director Marc Rayman brings us his monthly update on Dawn's status.

LPSC 2016: So. Much. Ceres.

Emily Lakdawalla • March 30, 2016

At last week's Lunar and Planetary Science Conference, I enjoyed a large number of talks about Ceres. Now in its Low-Altitude Mapping Orbit, Dawn is showering scientists with high-resolution, color data.

Dawn Journal: Success at Ceres

Marc Rayman • March 01, 2016

More than eight years after leaving Earth behind for an ambitious deep space adventure, the Dawn mission has now collected all of the data originally planned. Chief Engineer and Mission Director Marc Rayman brings us an update.

Dawn Journal: Measuring Light

Marc Rayman • February 01, 2016

Chief Engineer and Mission Director Marc Rayman explains some of the measurements the Dawn mission is taking at Ceres, most of which depend on sunlight.

Dawn Journal: Science on Ceres

Marc Rayman • January 01, 2016

The Dawn mission is developing humankind’s most intimate portrait ever of a dwarf planet. Mission Director and Chief Engineer Marc Rayman returns with his monthly update on the mission's progress.

Dawn Journal: Descent to LAMO

Marc Rayman • December 02, 2015

Dawn's Chief Engineer and Mission Director Marc Rayman previews what's in store as the spacecraft moves into its final mapping orbit around dwarf planet Ceres.

DPS 2015: Solar System Formation

Erika Nesvold and John Debes • November 20, 2015

At the 47th Division of Planetary Systems meeting, many presentations touched on some of the most contentious and poorly known aspects of how planets form.

OSIRIS-REx Progressing Through Environmental Testing

Dante Lauretta • November 16, 2015

The OSIRIS-REx spacecraft continues to make steady progress toward launch in September 2016. Environmental testing is now underway to ensure the spacecraft is ready for the many conditions it will experience over its mission.

DPS 2015: First reconnaissance of Ceres by Dawn

Emily Lakdawalla • November 12, 2015

This is the first major meeting since Dawn's arrival at Ceres, and despite competition with Pluto surface science there was a well-attended Ceres talk session on Monday and poster session on Tuesday.

Dawn Journal: A Bounty of Data

Marc Rayman • October 30, 2015

Dawn has completed another successful campaign to acquire a wealth of data in its exploration of dwarf planet Ceres, providing our clearest and most complete view ever of this world.

Dawn data from Ceres publicly released: Finally, color global portraits!

Emily Lakdawalla • October 22, 2015

A few days ago, Dawn officially released the first big pile of data from the Ceres mission phase. Thanks to the public release, I can show you color global portraits of Ceres.

OSIRIS-REx Spacecraft Assembly Nearly Complete

Dante Lauretta • October 14, 2015

The OSIRIS-REx mission continues to make great progress and is in the Assembly, Test, and Launch Operations (ATLO) phase of the program. There's been many great accomplishments leading up to this point.

How do you pronounce "Ryugu?"

Emily Lakdawalla • October 07, 2015

With some help from astronomer Elizabeth Tasker and a group of astronomy graduate students from the University of Hokkaido, I learn how.

Hayabusa2's target asteroid has a name!

Emily Lakdawalla • October 05, 2015

JAXA announced today the results of the naming contest for Hayabusa2. The target of the sample-return mission, formerly known as 1999 JU3 and still numbered 162173, is now named 162173 Ryugu.

Favorite Astro Plots #1: Asteroid orbital parameters

Emily Lakdawalla • October 01, 2015

This is the first in a series of posts in which scientists share favorite planetary science plots. For my #FaveAstroPlot, I explain what you can see when you look at how asteroid orbit eccentricity and inclination vary with distance from the Sun.

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