Search found 2 matches

by brightmoon
Sun Jul 08, 2007 2:08 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Radiometric dating
Replies: 23
Views: 6786

carbon dating is only good for about 50,000 years the atmospheric C13 is changed by nuclear bomb blasts but it's sorta like setting a clock ahead 5 mins ..you know its 5 minutes fast so you can figure out the correct time there are other factors that can change the amount of C13 absorbed as well.......
by brightmoon
Sun Jul 08, 2007 1:55 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Radiometric dating
Replies: 23
Views: 6786

:shock:

wow you do realize that there has been life on this planet for about 3 billion years

3 billion years ago it was mostly unicellular
multicellular life is about a billion years old