https://padlet.com/jakepier67/80opfb5a50b3 en-us 2017-03-07 19:56:01 UTC 2025-11-18 07:41:29 UTC hello@padlet.com jakepier67 https://padlet.com/jakepier67/80opfb5a50b3/wish/158483736 Scientists know the age of the Earth based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old. But it could certainly be older. Scientists tend to agree that our little planet is around 4.54 billion years old (give or take a few hundred million). Other scientists determine how old the Earth is by using the radiometric dating system on these meteorites, geologists have been able to determine that the Earth is 4.54 billion years old within a margin of error of about 1%. ]]> 2017-03-07 19:58:28 UTC https://padlet.com/jakepier67/80opfb5a50b3/wish/158483736 jakepier67 https://padlet.com/jakepier67/80opfb5a50b3/wish/158486201

]]> 2017-03-07 20:06:54 UTC https://padlet.com/jakepier67/80opfb5a50b3/wish/158486201 jakepier67 https://padlet.com/jakepier67/80opfb5a50b3/wish/158487721 Also rocks returned from the Moon have been dated at a maximum of around 4.4 and 4.5 billion years old. Martian meteorites that have landed upon Earth have also been dated to around 4.5 billion years old by lead-lead dating.]]> 2017-03-07 20:11:59 UTC https://padlet.com/jakepier67/80opfb5a50b3/wish/158487721