Could humans already be living on other planets? Scientists have analysed a meteorite that landed in England last year, and found hints that aliens might not be too different to us.
'Witness' from space hints at origin of life
Could humans already be living on other planets? Scientists have analysed a meteorite that landed in England last year, and found hints that aliens might not be too different to us.
What's happening?
A large piece of rock or metal from space, called a meteorite, landed in Gloucestershire last year. It contains water which is very similar to the water we have on Earth.
Water is needed to produce life. That is why it makes up 60% of our bodies.
The meteorite that hit Earth contained water. This means that small space objects could have taken water to other planets too, which means that other planets could also support life.
If other planets created life in the same way as Earth, this means that their aliens could even look the same as us. They could have evolved in the same way.
Find out more
Some scientists say it is impossible that a human-like alien could have developed on a different planet because evolution always happens differently.
But others claim that there is proof that evolution can happen in the same way even in opposite corners of the universe. This means there could be an alien out there that looks just like you.
Yes! If they came to life in the same way and had a similar environment, there is no reason why they should not look like us.
No! There is not even any evidence that aliens exist yet, and it is even less likely that they will be the same as humans.