If dark matter is 'invisible,' how do we know it exists?

Despite making up most of the matter in the universe, dark matter doesn

We do not understand how it can exist': Astronomers baffled by 'almost invisible' dwarf galaxy that upends a dark matter theory

Maybe 'dark matter' doesn't exist after all, new research suggests

Astronomers Might See Dark Matter by Staring into the Void

What Do We Know About Dark Matter Now?

Quantum Diaries

Is Dark Matter Real?

What is dark matter?

How did Earth's continents form? Leading theory may now be in doubt - Space.com

What Is Dark Matter, and Where Is it Hiding? — Caltech Magazine

What Kind of Technology Could Dark Matter Research Lead To?