For a long time, many scientists have believed that asteroid bombardments, similar to that which is assumed to have killed the dinosaurs, happen on our planet at common intervals of about each 26 million years. 

A preferred principle was dim companion star referred to as Nemesis would method our Sun at 26 million 12 months intervals, inevitably inflicting mass extinctions on Earth.

However, a brand new scientific examine confirms that such bombardments, in the event that they do happen, are random.

But a extra basic query is, are impacts from house actually the reason for extinction degree occasions on our planet?