Read this comment. Hayabusa is an unusual asteroid. It is believed to be a pile O’ rubble held together loosely with low gravity. What would happen if such an asteroid were to hit Earth? I supposed it would depend on the angle of attack. Would it break up? Would the damage be less severe if it broke up into thousands of small boulders instead of striking as one solid mass?

What are the implications for other loose pils O’ rubble in the solar system that are hazards for Earth? If a lot of asteroids are actually a pile of rubble held together loosely with low gravity how does this change the asteroid impact theory. Yes, we know there were large solid meteors that hit the Earth and made some big ass craters including causing at least one mass extinction, possibly more.