7 facts about the universe that you might not know

We ourselves and everything we see are made up of stars. Or rather, from the dead particles of stars. At the beginning of the universe, there were only simple elements such as hydrogen and helium. After they formed the first stars, which created iron and gold. After some time, the first stars died, creating new elements.

Our body includes almost all elements of the universe. And even gold.

The stars that we see in the sky are nothing but the light of stars that has come down to us years, tens, hundreds and thousands of years later.

So far, scientists cannot agree on the exact number of stars, but the number given is considered the most accurate so far.

We have a huge interest in finding aliens, but we ourselves may be aliens. Some scientists believe that simple microorganisms and bacteria were brought to earth by meteorites

Yes, our universe may be just one of many countless other universes that are different from ours.

Black holes, due to their strong gravity, attract objects and even light towards them. Scientist Stephen Hawking believes that if a black hole is left without "food" for too long, then it can disappear.

Until 1920, scientists thought the universe was static, but astronomer Edwin Hubble discovered that the universe was expanding. In addition, in 1998, the Hubble Space Telescope recorded this expansion.