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Stories, updates, insights, and original analysis from The Planetary Society.

Dawn Journal: Ion Propulsion

The Dawn mission continues smoothly, as the spacecraft reliably thrusts with its ion propulsion system, demonstrating all the patience of a...well, of an ion-propelled spacecraft!

Dawn Journal: Software Updates

Dawn continues its powered flight, having accumulated more than 100 days of ion thrusting since its launch nearly seven months ago. All systems are healthy as the probe patiently and persistently propels itself through the solar system.

Dawn Journal: Backup Camera Checks Out

Treating intercalary days just as it does most other days in its interplanetary cruise, today Dawn continues patiently and ever-so-gently reshaping its orbit around the Sun with the delicate yet persistent push from its ion propulsion system.

Dawn Journal: Safely Cruising

Now in interplanetary cruise, the Dawn spacecraft is following a much more leisurely pace than the one it maintained during the initial checkout phase of the mission.

Dawn Journal: Halfway Through Checkout

Now more than halfway through its 80-day initial checkout phase, the Dawn spacecraft continues to please its fans in mission control and throughout much of the rest of the universe.

Dawn Journal: Testing, Testing, Testing

Dawn's checkout phase continues to go very well. The spacecraft is healthy as it and Earth travel their separate ways, separating at almost 1 light second per day.

Dawn Journal: Launch!

The Dawn project welcomes you to deep space! Dawn is operating smoothly on the fourth day of its eight-year adventure.

Dawn Journal: Awaiting Launch II

The countdown is underway for Dawn's liftoff on September 26 at 7:25:00 am EDT. This is the second time our hero has been within a few days of launch.

Dawn Journal: More Than One Way to Leave the Launch Pad

There are two ways for a spacecraft to leave its launch pad: climbing on a blazing tower of powerful flames accompanied by a thunderous announcement of its departure or suspended securely and gently on the crane that hoisted it there in the first place.

Dawn Journal: More Bad Weather

Just after the previous log was posted, further predictions of poor weather at Cape Canaveral and difficulties with a downrange launch vehicle tracking system required a launch postponement.

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