3 ms·
It only takes a 50-meter (radius) rock to destroy a city, a 240-meter rock to destroy an entire region, and a 4 km rock to destroy the planet. So, I guess it d
by withinboredom 2y ago
It only takes a 50-meter (radius) rock to destroy a city, a 240-meter rock to destroy an entire region, and a 4 km rock to destroy the planet.
So, I guess it depends on what you want to accomplish, whether they see it coming or not.
- kadoban 2y ago"Only". Those are huge! Especially when you consider the city you have to build around them to launch the damn things.
- withinboredom 2y agoThe required delta-v isn't all that much from the moon, and it's more about the mass and speed than the actual shape of the rock.