NASA's DART spacecraft was successfully launched from Vandenberg Space Force Base into the starry night sky Tuesday on a mission to collide with an asteroid 6,835,083 miles away from Earth.

SpaceX's Falcon 9 rocket lifted off at 10:21 p.m. from Space Launch Complex-4 carrying NASA's Double Asteroid Redirection Test spacecraft in a show that lit up the sky and rattled windows in northern Santa Barbara County.

The spacecraft is intended to self-navigate while traveling at a speed of 15,000 mph and intentionally slam into moonlet asteroid Dimorphos by September 2022, according to NASA officials. Dimorphos orbits larger twin asteroid Didymos. 

As designed, the Falcon 9 first stage booster successfully separated from the spacecraft just minutes into flight and landed on the "Of Course I Still Love You" droneship located in the Pacific Ocean, off the coast of Baja, California.

At 11:16 p.m., DART separated from the second stage of its launch vehicle and "started the process of detumbling the spacecraft to a safe orientation for deploying its solar arrays," according to mission operators at the Johns Hopkins Applied Physics Laboratory who are responsible for building and managing the mission, a project they say was a decade in the making.

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SpaceX's Falcon 9 lifts off from Vandenberg Space Force Base Space Launch Complex-4 in a show that lit up the dark, starry skies on Tuesday night.

“DART is turning science fiction into science fact and is a testament to NASA’s proactivity and innovation for the benefit of all,” said NASA administrator Bill Nelson in a statement Wednesday morning. “In addition to all the ways NASA studies our universe and our home planet, we’re also working to protect that home, and this test will help prove out one viable way to protect our planet from a hazardous asteroid, should one ever be discovered that is headed toward Earth.”

While there are currently no known hazards to Earth, targeting the Didymos binary asteroid system is the ideal candidate for DART, officials say, as it poses no actual impact threat to Earth, and scientists can measure the change in Dimorphos’ orbit with telescopes once impact occurs.

Outcomes of the mission, which marks the first interplanetary defense test, will more importantly demonstrate a potential method of protecting Earth from hazards in the future.

“It takes the entire team for a safe and successful launch,” said Col. Rob Long, Vandenberg's Space Launch Delta 30 commander and launch decision authority. “I congratulate NASA on achieving the first step in this program’s journey on its planetary defense test mission. We are proud to be a part of this team.”

To watch a recording of the mission, go to NASA TV or at

SpaceX DART Launch

The diagram by SpaceX illustrates the multistage launch that blasted off from Vandenberg Space Force Base on Tuesday night. 

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SpaceX's Falcon 9 first stage booster lifted off at 10:21 p.m. Tuesday night sending NASA's Double Asteroid Redirection Test spacecraft on a collision course for moonlet asteroid Dimorphos, 6,835,083 miles away from Earth.

Lisa André covers lifestyle and local news for Santa Ynez Valley News and Lompoc Record, editions of the Santa Maria Times.