World’s Most Asked Questions How Old is Earth

The SCI Show explores the age of Earth, estimated at 4.54 billion years. Scientists use rock dating, including the oldest rocks in Canada and zircon crystals in Australia, to determine Earth's age. Space evidence from moon rocks and meteorites further supports this estimate. The video concludes with a viewer survey about owning old items.

How does the age of moon rocks contribute to our understanding of Earth's age?

What evidence from meteorites supports the estimated age of the Earth?