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Jul 23, 667
Earth formed
The history of the Earth concerns the development of the planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to the understanding of the main events of the Earth's past -
Aug 21, 1000
when the moon formed
The giant impact hypothesis states that the Moon was formed out of the debris left over from a collision between the Earth and a body the size of Mars, approximately 4.5 Gya (four and a half billion years) ago. -
apollo11
apollo 11 was the first spacecraft to land humans on the moon Niel Amstrong and Buzz Aldrin -
the cambrain explosion
The Cambrian explosion, or Cambrian radiation, was the relatively rapid appearance, around 542 million years ago -
the ice age
Quaternary glaciation, also known as the Pleistocene glaciation or the current ice age, refers to a series of glacial events separated by interglacial events during the Quaternary period from 2.58 Ma (million years ago -
The snow ball Eaeth
The snowball Earth hypothesis posits that the Earth's surface became entirely or nearly entirely frozen at least once, some time earlier than 650 Ma (million years ago).
