# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2021-09-04 13:13:05 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1434142475468279808) In reply to: [@keefmoon](http://twitter.com/keefmoon/status/1434142038988046336) @ckieff How about the Eukaryotic event? Life started on Earth almost as soon as it was possible, after the heavy late bombardment. But all there was were simple cells and thats how it stayed for 1.1 billion years!!