Dark matter
Defined in 2 lectures. Each definition is in that lecture's terms.
Definitions are written by AI from each lecture’s transcript. The time opens the lecture where the lecturer explains it.
- An invisible substance in the universe that accounts for about of its content and plays a key role in pulling matter together to form galaxies.11:07The Universe in a Box: Astrophysical Simulation and SupercomputingAndrew Pontzen · Perimeter Institute
- A hypothesized form of matter that interacts primarily through gravity, invoked to explain why galaxies rotate faster than visible matter alone accounts for.