DART shortened the asteroid’s orbit by 32 minutes.
Oct 11, 2022, 9:00 PM UTCAn image of asteroid Didymos and its moonlet, Dimorphos, about 2.5 minutes before the impact of NASA’s DART spacecraft on Monday, September 26th, 2022.When a spacecraft slammed into an asteroid last month, it pushed it closer to its companion and sped up its orbit by about 32 minutes.
as a success. Researchers think that one of the reasons for the big change in orbit is that the impact displaced tons of material, creating a dramatic-looking plume of debris in the process. This “recoil” gave the impact an extra boost,There’s still a lot about the impact that will take scientists time to figure out.
“All of this information plays into our understanding of what really happened in the experiment. How effectively did the kinetic impact change the motion of the asteroid? How efficiently was momentum transferred? It’s too soon to say; there’s a lot of moving parts in this calculation,” said Tom Statler, DART program scientist at NASA, during a press conference.
As exciting as these early results from the DART mission are, knowing how to move an asteroid is only part of any future efforts to defend our planet from space rocks. The much larger issue is knowing what hazards are out there — and knowing about them as soon as possible.
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