Astrophysics, Cosmology & Relativity

4 terms

An unknown form of energy with negative pressure that permeates all space and drives the accelerated expansion of the universe.

A non-baryonic form of matter that does not absorb, reflect, or emit electromagnetic radiation, detectable solely through its gravitational…

An extended, nearly spherical region of dark matter enveloping a galaxy or galaxy cluster that extends far beyond the visible stellar disk.

A probabilistic equation formulated by Frank Drake in 1961 to estimate the number N of active, communicative extraterrestrial civilizations…