Just how long has the universe been around? Scientists estimate the universe is 13.8 billion years old, with an uncertainty ...

A 4.4 billion-year-old chunk of Earth is thought to be the oldest physical geological proof of how long our planet has been ...

The clock would tell him how long that ore -- and by extension, the earth's crust -- had existed. His observations and calculations put Earth's age at 2.2 billion years. This was a dramatic ...

Tom is a writer in London with a Master's degree in Journalism whose editorial work covers anything from health and the environment to technology and archaeology.

A new study suggests the moon is 4.51 billion years old, 100 million years older than previously thought. This revised age is ...