The Earth did not explode but it had a fairly heavy collision with a planet called Theia about 4.6 billion years ago.
1.8 million years ago
If They Lived 500 years ago It WAS 500 years ago
558 years ago.
No. The milky way did not exist at all, fourteen billion years ago. According to the Big Bang theory, the first galaxies started forming at least a million years after the universe had started to expand.
About 65 million years ago.
Our Sun did not exist till about five billion years ago.
It was 20 years ago.
your nan
4 Billion years.
There was 700 polar bears left in our world 50 years ago.
5000 years ago
Humans evolved about half a million years ago. Fully modern humans appeared about 200,000 years ago.
more than one
I WISH I KNEW! lol!
He held the world record for the mile many years ago.
38 years ago
2006 fifa world cup