Originally published at: https://bigideas.network/dark-matter/
The universe is full of mysteries, but one of the biggest is called ‘dark matter’.
This is what we know so far.
When we look at the Milky Way or any other galaxy in the universe, we can see that they’re made up of things like stars, planets, nebulae, and black holes. They all have mass and when we add them up, we should end up calculating the mass of the galaxy.
But when we put this calculated mass into a computer simulation of a galaxy, the galaxy flies apart instead of rotating - which is what we observe through our telescopes…