dark matter

mysterious non-luminous matter (and/or radiation) comprising most of the matter in our observable universe

AI overview

Dark matter is invisible material that doesn't emit light but makes up most of the matter in our universe, detected only through its gravitational effects on visible objects like stars and galaxies. Scientists study it because understanding dark matter is essential to explaining how galaxies form and move, and how the universe itself is structured.

AI-generated from the Wikipedia summary — may contain errors.

~40 min read