Earth Age: How Old is the Planet?
Geologic time seems to be a Goliath that many of us David earth scientists wrestle with. Earth is a staggering 4.5 billion years old.
Despite the challenges of grappling with geologic time, we can come up with a decent estimate of Earth’s age by studying meteorites.
Meteorites are remnants when all the planets were forming. Some of them still land on the planet today.
By dating meteorites, we find that the oldest rocks are often 4.5 billion or so years old.