How To Date A Planet

The video explains the differences between the moon's and Earth's surfaces, highlighting Earth's ability to renew its surface through volcanic activity and tectonic processes. It discusses how rocks are dated using radioactive decay, but this process is complicated by Earth's constant rock recycling. Zircon, a durable mineral containing uranium, helps scientists determine Earth's age, revealing it to be at least 4.4 billion years old. This is supported by evidence from meteorites, suggesting Earth is even older.

Explain the process of uranium-lead dating in zircon crystals.

What evidence suggests that the Earth is older than 4.4 billion years?