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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.

Dawn Journal: 8 Years in Space

Marc Rayman • September 28, 2015

On the 8th anniversary of the launch of the Dawn spacecraft, Chief Engineer and Mission Director Marc Rayman gives his annual summary of Dawn’s progress on its interplanetary travels.

Searching for the Origins of Earth’s Water

Van Kane • September 17, 2015

Three recently proposed low-cost space missions all aim to answer the same question: Where did Earth's abundant water come from?

Dawn Ceres image bonanza: Grab your 3D glasses!

Emily Lakdawalla • September 09, 2015

For months, Dawn has been steadily, methodically sharing dozens of images of brand-new sights of a previously unexplored icy world. For the last couple of days I've been making up for lost time, completely buried in the Dawn Ceres images, and I have some maps and 3D anaglyphs to share with you.

Populating the OSIRIS-REx Science Deck

Dante Lauretta • September 01, 2015

The assembly of the OSIRIS-REx spacecraft continues, with many elements integrated onto the spacecraft ahead of schedule. Last month both OTES and OVIRS were delivered to Lockheed Martin and installed on the science deck.

Dawn Journal: Mapping Ceres

Marc Rayman • August 22, 2015

More than two centuries after its discovery, Ceres is being mapped in great detail by the Dawn spacecraft. Chief Engineer and Mission Director Marc Rayman gives an update on Dawn's progress.

Dawn Journal: Descent to HAMO

Marc Rayman • July 30, 2015

With a wonderfully rich bounty of pictures and other observations already secured, Dawn is now on its way to an even better vantage point around dwarf planet Ceres.

Proposals to Explore the Solar System’s Smallest Worlds

Van Kane • July 27, 2015

Van Kane rounds up some of the latest NASA Discovery mission proposals aiming to explore our solar system's smallest bodies.

Dawn at Ceres: A haze in Occator crater?

Andrew Rivkin • July 21, 2015

While Pluto deservedly stole the headlines last week, Chris Russell’s Dawn update at the Exploration Science Forum at NASA Ames reminded us that the other dwarf planets are also sharing their secrets with eager scientists.

OSIRIS-REx – Testing In Progress

Annie Wargetz • July 17, 2015

While the OLA, OCAMS, and REXIS instruments on the OSIRIS-REx spacecraft continue working towards their deliveries, other hardware onsite at Lockheed is undergoing testing prior to installation. The hardware is put through tests here on Earth prior to launching into space.

Dawn Journal: Ceres' Intriguing Geology

Marc Rayman • June 30, 2015

Dawn is continuing to unveil a Ceres of mysteries at the first dwarf planet discovered. Mission Director Marc Rayman gives us an update.

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