SpaceX's Starship prototype exploded while attempting to land on Wednesday after an otherwise successful test launch from the company's rocket facility in Texas, a live video of the flight showed.
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The rocket destroyed in the accident was a 16-story-tall prototype for the heavy-lift launch vehicle being developed by billionaire entrepreneur Elon Musk's private space company to carry humans and 100 tons of cargo on future missions to the moon and Mars.
The self-guided rocket blew up as it touched down on a landing pad following a controlled descent. The test flight had been intended to reach an altitude of 41,000 feet, propelled by three of SpaceX's newly developed Raptor engines for the first time. But the company left unclear whether the rocket had flown that high.
Musk said in a tweet immediately following the landing mishap that the rocket's "fuel header tank pressure was low" during descent, "causing touchdown velocity to be high."
He added that SpaceX had obtained "all the data we needed" from the test and hailed the rocket's ascent phase a success.
