Losing Arecibo’s giant dish leaves humans more vulnerable to space rocks, scientists say – Space.com

Ignorance may feel like bliss, but preparedness offers better odds of surviving what is to come. And when it comes to planetary defense
, ignorance just became a bit more inevitable.
Planetary defense is the art of identifying and mitigating threats to Earth from asteroid impacts. And among its tools is planetary radar, an unusual capability that can give scientists a much better look at a nearby object. Arecibo Observatory
in Puerto Rico was one of only a couple such systems on the planet, and…

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