Question: how old are the oldest fossils on earth?

How does the earth maintain its balance on the orbit?

how was the earth formed

if the ozone layer is totally damaged, what impact will it bring on the living creatures on earth

how are radio waves from pulsars received on earth

How does a rocket overcome the earth's gravitational field and get to space?

if it was possible for a man to dig a hole that can penetrate the earth crust , would he finds himself in another

Given that asteroids from mars are found on earth, would asteroids from earth be found on mars?

where is the center of the earth

is it true that when the moon comes close to the earth that the water can be pulled up?