Very Short History of the Planet Earth

John Baez has written a Very Short History of the Planet Earth. He says, "The Earth has survived some remarkable disasters. To keep our tale brief, let us focus on four: the Big Splat about 4.55 billion years ago, the Late Heavy Bombardment about 4 billion years ago, the Oxygen Catastrophe roughly 2.5 billion years ago, and the Snowball Earth events about 850 million years ago. The details of these events --- and indeed, whether they even happened at all --- remain controversial. We shall present some widely accepted theories without dwelling on caveats or alternative scenarios. In every case, there is interesting physics involved in testing these theories."

It's not the whole history, but select dramatic parts, told simply and quick. It includes many scenes I was not aware of.

Ttauristardrawing
The dust cloud that is the precursor to Earth.


 

1 Comments

#1 | Fri, 08-21-09 10:16 | Ben Keating

The time scale our planet is on is pretty amazing.

 

Leave a Comment

Your Name:









Thanks for your comment. The words in the CAPTCHA box come from old book texts that are being scanned and stored by the Internet Archive. By entering the words in the box, you prove you are not a bot and also you help proofread the books. If the sample you see is too hard to read, simply click the recycle button to get another two. Don't forget to put a space between the words.


 

Archives - This site operates under a Creative Commons License.