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Apollo 13 50th Anniversary

The Planetary Society is celebrating the 50th anniversary of Apollo 13, which launched on 11 April 1970. Disaster struck on 13 April, prompting the crew's infamous "Houston, we've had a problem" call for help. Learn what happened, and how NASA got the astronauts home safely on 17 April.

More Apollo resources

The Downlink

Our weekly newsletter is your toolkit to learn more about space, share information with your friends and family, and take direct action to support exploration. Anyone can subscribe at planetary.org/connect.

BepiColombo Earth flyby

Europe and Japan's BepiColombo spacecraft, which launched in 2018, flew by Earth on 10 April and used our planet's gravity to swing towards the inner solar system. Learn more about this mission and why we study Mercury.

More Blogs & Articles

Dawn Journal: Checkout Complete, Interplanetary Cruise Underway

Marc Rayman • December 18, 2007

After the remarkably successful initial checkout phase, Dawn is now in the interplanetary cruise phase.

Dawn Journal: Halfway Through Checkout

Marc Rayman • November 14, 2007

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

Marc Rayman • October 26, 2007

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: Firing Up the Ion Propulsion System

Marc Rayman • October 09, 2007

Joining an elite club among spacecraft, Dawn successfully fired up its xenon ion propulsion system on October 6.

Dawn Journal: Launch!

Marc Rayman • October 02, 2007

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

Dawn Launch: A Brilliant Flash and a Thunderous Roar!

Ken Kremer • September 27, 2007

At 7:34 a.m. EDT the Delta II Heavy roared off launch pad 17 B at Cape Canaveral with a brilliant flash of glowing orange light and billowing white smoke.

Dawn Journal: Awaiting Launch II

Marc Rayman • September 21, 2007

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: What to Expect After the Launch III

Marc Rayman • September 14, 2007

Now less than two weeks from its planned September 26 launch, Dawn is eagerly awaiting the beginning of its fantastic adventure.

Dawn Journal: Dawn Prepares to Launch II

Marc Rayman • September 05, 2007

NASA is preparing (again) to bring Dawn to the Florida skies as all systems are gearing up for a September 26 launch.

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

Marc Rayman • July 17, 2007

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.

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