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Dawn Journal: Calibrating instruments and thrusters on Vesta approach

Marc Rayman • April 07, 2011

Three and a half years after launch, Dawn continues its travels around the Sun, maneuvering to take the same orbital path as Vesta. The spacecraft has spent most of the past month gently thrusting with its ion propulsion system. Some of the thrusting this month, however, was not designed to propel Dawn to Vesta.

365 Days of Astronomy Podcast: What's up in the second quarter of 2011

Emily Lakdawalla • April 07, 2011

Regular readers of this blog will find the content of today's 365 Days of Astronomy Podcast familiar, because it's an update on what the solar system exploration spacecraft are up to, based on my monthly "what's up" updates.

What's up in the solar system in April 2011

Emily Lakdawalla • March 31, 2011

April 2011 will see MESSENGER begin the science phase of its orbital mission at Mercury, and should, I think, also see the start of Dawn's approach observations of Vesta. At Mars, Opportunity is back on the road again, rolling inexorably toward Endeavour. At Saturn, Cassini will continue its focus on Saturn and Titan science.

Dawn's instruments are being roused for Vesta approach

Emily Lakdawalla • March 21, 2011

Today the Dawn imaging team released a photo from the main camera, the Framing Camera, symbolizing that they're preparing to start Dawn approach science; the other two science instruments, a spectrometer and a neutron detector, are also being turned on and checked out.

Dawn Journal: HAMO2; the destination glows bright

Marc Rayman • March 09, 2011

Deep in the asteroid belt, Dawn continues thrusting with its ion propulsion system. The spacecraft is making excellent progress in reshaping its orbit around the sun to match that of its destination, the unexplored world Vesta, with arrival now less than five months away.

What's up in the solar system in March 2011

Emily Lakdawalla • February 28, 2011

I don't think there's any question what the big event of this month will be: MESSENGER is finally, finally entering orbit at Mercury on March 18 at 00:45 UTC (March 17 at 16:45 for me).

Dawn Journal: ORT ORT ORT

Marc Rayman • February 03, 2011

Dawn continues its flight through the asteroid belt, steadily heading toward its July rendezvous with Vesta, where it will take up residence for a year. On January 10, Dawn performed some of the activities that it will execute in its low altitude mapping orbit (LAMO) at Vesta.

Dawn Journal: LAMO (Low Altitude Mapping Orbit)

Marc Rayman • January 05, 2011

Dawn finishes 2010 much as it began the year, thrusting with its ion propulsion system in steady pursuit of a distant world.

365 Days of Astronomy Podcast: Small Worlds

Emily Lakdawalla • December 27, 2010

Today the 365 Days of Astronomy podcast aired my contribution, Small Worlds, about the smaller denizens of the solar system visited in the past year, and due to be visited in the next.

Dawn Journal: Attitude Adjustment

Marc Rayman • December 07, 2010

Dawn is maintaining its smooth and steady course through the solar system as it gradually closes in on Vesta.

Dawn Journal: Approaching Conjunction

Marc Rayman • November 03, 2010

Continuing its journey to collect treats in the main asteroid belt, Dawn is making excellent progress toward its July 2011 rendezvous with protoplanet Vesta.

Dawn Journal: Third Anniversary in Space, and How to Map Vesta

Marc Rayman • September 28, 2010

On the third anniversary of traveling through the solar system on its own since dispatching Dawn on a separate journey, Earth continues to orbit the sun in much the same way it has been.

Dawn Journal: Getting Warmer, Farther from the Sun?

Marc Rayman • September 02, 2010

Dawn is now so far from the sun that even with its tremendous solar arrays, it does not receive enough sunlight to generate sufficient electrical power to operate all systems and still achieve maximum thrust.

Dawn Journal: A Year from Vesta

Marc Rayman • July 28, 2010

Dawn is flying smoothly through the asteroid belt, now less than a year from entering orbit around Vesta, the first of its two cosmic destinations.

Dawn Journal: Dawn 9.0

Marc Rayman • June 30, 2010

A new version of the Dawn spacecraft is continuing the ambitious journey through the asteroid belt to uncharted distant worlds.

Dawn Journal: Surveying Vesta

Marc Rayman • June 01, 2010

After more than 2.5 years of spaceflight, and more than 6 months in the asteroid belt, Dawn's interplanetary journey continues smoothly.

Dawn Journal: Matching Paces with Vesta

Marc Rayman • May 02, 2010

Dawn remains on course and on schedule for its appointments with Vesta and Ceres, colossal protoplanets in the main asteroid belt.

Dawn Journal: It's Just a Phase

Marc Rayman • March 30, 2010

Our interplanetary adventurer still has a great deal of ion thrusting to complete before it can begin its orbital exploration of Vesta next year.

Dawn Journal: Forever Farther From Earth Than the Sun

Marc Rayman • February 26, 2010

Pushing ever farther into space, deeper into the asteroid belt, Dawn is continuing to progress smoothly on its solar system journey.

Dawn Journal: Thruster Two's Time to Shine

Marc Rayman • February 10, 2010

Dawn is outfitted with three ion thrusters, assigned the heartwarming names thruster #1, thruster #2, and thruster #3.

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