Early Earth Timeline By Itz_Rosa 4600 BCE Core formation 4567 BCE planetary Accretion 4500 BCE Formation Of The Moon 4300 BCE planetary Cooling 4000 BCE End Of Heavy Bombardment 2000 BCE Core formation Jan 1, 2001 planetary Accretion Jan 1, 2002 planetary Cooling Jan 1, 2003 Formation Of The Moon Jan 1, 2004 End Of Heavy Bombardment