3 ms·
I’ve wondered sometimes why it is that asteroids are made out of anything as solid as rock, rather than just being big dust bunnies. I would assume that you wo
by fallingfrog 3y ago
I’ve wondered sometimes why it is that asteroids are made out of anything as solid as rock, rather than just being big dust bunnies. I would assume that you would need pressure and heat to make rock, and therefore small rocky asteroids are derived from collisions between much larger objects.
- kbelder 3y agoIn space, if two small dust particles collide, they are probably moving at very high speed in relation to each other, and there's obviously no air to affect the impact. I don't know what that means, but I expect our intuition about how substances accrete is probably way out of whack.