The greater gravitational forces involved. Studies of the Moon's surface show that in itsĮarly history it was subjected to bombardment by giant meteorites.Įarth's early history must have been even more violent because of The planets and their moons, sweeping up all the 'left-over' bits To clump together, until finally there were substantial bodies, The formation of the planets (including Earth), asteroids, meteors,Ĭomets and the central sun - formed through the tendency of matter Really good evidence to support the following hypothesis: The Earth While we don't know exactly how the Earth was formed, we have some In addition, mineral grains called zircon from sedimentary rocks from west-central Australia have recently been reported with an age of about 4400 million years. The best age estimate for the Earth's final formation is about 4540 million yearsĪgo, based on data from the Canyon Diablo meteorite. The Isua Supracrustal rocks in West Greenland are dated at about 3700 to 3800 million years The oldest rocks dated so far are from the Acasta Gneiss Complex near Great Slave Lake, Canada with an age of about 4030 million years. Scientists estimate that our planet, Earth, formed around 4600 million yearsĪgo.
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