Planetary defense test deflected an asteroid but unleashed a boulder swarm::A UCLA-led study of NASA’s DART mission determined that the strategy presents previously unanticipated risks.

5 points

Was no one involved alive in 1998? We had two movies about this.

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1 point

No one remembers deep impact

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22 points

Unanticipated? I’m sure I can pull out a very serious and scientific simulation that predicted this exact event from 1979. It’s called Asteroids I think.

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6 points

Sounds like the gravity tug or thruster methods might end up being the better solution.

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7 points

Pretty cool they were able to measure the change in velocity of an object 6 million miles away with millmeter/second resolution. Not cool that it only slowed down a few mm/second though

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7 points

Actually, a few mm/sec is quite a lot. That could easily be more than enough to deflect an asteroid from hitting earth. That few mm/sec will accumulate over the time it takes the asteroid to travel six million miles.

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1 point
*

Well you would need the vector to predict that not just the speed (which they likely have, didn’t see it in the article), but pretty cool nonetheless

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24 points

Totally totally totally unanticipated that one. Like every discussion about asteroid defence ever anticipated exactly this kind of scenario.

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