The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system ...

There are more planets than there are stars, and at least a quarter are Earth-size planets in their ... seeking evidence that life may exist on the planet. It’s no wonder that Kepler, which ...

How do scientists develop a theory like life exists on ... living cells on Earth. If Mars could support life in its early history, then life probably formed on many other planets, too.

someone who studies ancient living things and how planet Earth has evolved over millions of years. Dr Neil Clark, a real life palaeontologist, shows a range of fossils including colonial coral ...

Scientists have estimated the total amount of life on Earth that exists below ground - and it ... than is woven into all the humans on the planet. "Something like 70% of the total number of ...