Chelyabinsk meteor - Chelyabinsk Meteorites For Sale

However, this collision has become a topic of discussion yet again after the researchers devised a new method of dating collisions.

The wisdom of breaking-up a single meteor by a low altitude missile strike to many smaller projectiles spreading throughout the countryside definitely needs to be revisited.

Comets, meanwhile, can be much larger than asteroids, travel much faster, and given the nature of their orbits, they are much more likely to hit the Earth with a dead-on impact than an asteroid will, which also has a circular orbit around the Sun, so it is much more likely to hit with a glancing, lower speed blow.

The smaller the number, the brighter the object; the sun's apparent magnitude is -27.