...actually, it's okay. Barring some kind of gravitational perturbation, Earth is safe from planet killing asteroids for at least 1,000 years.
This is good news...we're testing systems that should protect us from smaller rocks.
Yeah, we did the math, and the big rocks, which are the easiest to track, are most likely not a threat. We still have to worry about a city killer, though...
...let's hope we can scale up DART.
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