Late Heavy Bombardment

Below is the details of 'Late Heavy Bombardment'.

 

Late Heavy Bombardment 3800 mya

The gas giant Planets (Jupiter,Saturn,Uranus,Neptune) reach a critical size forcing Neptune into an eccentric orbit and into the Kuiper belt (http://en.wikipedia.org/wiki/Kuiper_belt) scattering debris throughout the solar system. Inner planets (including Earth and Moon) suffer intense meteorite bombardment (the late heavy bombardment), likely sufficient to sterilise the planet. Many craters on the moon and the Lunar Maria (http://en.wikipedia.org/wiki/Lunar_maria) formed as a result of this event.
Source: http://en.wikipedia.org/wiki/Late_heavy_bombardment (Wikipedia)

Keywords: evolving_earth, astronomy