Dark energy
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 representing about of the universe that acts to push space apart and accelerate cosmic expansion.11:11The Universe in a Box: Astrophysical Simulation and SupercomputingAndrew Pontzen · Perimeter Institute
- An invisible form of energy permeating space that acts as a repulsive force, explaining the accelerated expansion of the universe.