PPT Slide
Ages derived from Allende meteorite indicates formation of first planetesimals occurred 4,559 +/- 5 Myr ago! Think about the quoted accuracy!
1) Other meteorites 2) Lunar rocks
3) Earth rocks 4) Martian rocks
For more information on the Allende meteorite:
The Allende Meteorite - 1
The Allende Meteorite - 2
Allende meteorites for sale!
For more information on the age of the Earth: