... sses contributed - the chemical make-up of the water found in comets and asteroids differs from that found in our oceans, so impacts alone are an unlikely explanation. ...

Artwork of a small meteoroid impacting the surface of the Moon. Impacts are much less common now than billions of years ago; yet they still occur, because the Moon has no atmosphere to slow down or destroy incoming missiles....

Between 4.1 and 3.8 billion years ago, the Solar System was in turmoil. Known as the Late Heavy Bombardment, the period was characterized by an enhanced rate of asteroid impacts in the inner Solar System - remnants from the planet building processes ...

... age of planetary assembly, terrestrial planets grow their mass through collisions of planetary embryos, and that these giant impacts should produce observable debris. The ALMA (Atacama Large Millimetre/submillimetre Array) observations of CO strongly ...