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Planetary defense test deflected an asteroid but unleashed a boulder swarm
(newsroom.ucla.edu)
News and findings about our cosmos.
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Good news: smaller pieces burn up much easier in the atmosphere, so in the case of an actual asteroid deflection it's still a net gain.
Bad news: more potential navigation hazards.
I think that's a fair trade.
We won't have to use this defense mechanism very often anyway. Fingers crossed.