60
Planetary defense test deflected an asteroid but unleashed a boulder swarm
(newsroom.ucla.edu)
News and findings about our cosmos.
Subcommunity of Science
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
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.
Also, dispersing the boulders early enough means that most of them would miss Earth anyway.
I wouldn't really consider them navigation hazards, space is really big and boulders are really small. You'd have to aim a probe really precisely at one in order to hit it.
We won't have to use this defense mechanism very often anyway. Fingers crossed.