The technique called radiometric dating is based on
Increasingly, the other techniques are used, such that probably no one technique dominates for meteorite dating.
If you asked the same question of an educated European in AD 1900 you would have received a quite different answer.
Previously she was an assistant editor at Scholastic's Science World magazine.
Jeanna has an English degree from Salisbury University, a Master's degree in biogeochemistry and environmental sciences from the University of Maryland, and a science journalism degree from New York University.
This week, Cherry Lewis of the University of Bristol presented a talk about the history of dating the Earth as part of the BA Festival of Science in York, England.
Before so-called radiometric dating, Earth's age was anybody's guess.