Glosariusz - B

Baryogenesis is the process by which the class of subatomic particles called baryons were generated in the early Universe, including the means by which baryons outnumber antibaryons.

Big Bang is the prevailing cosmological model for the origin of the observable Universe. It depicts a starting condition of extremely high density and temperature, followed by an on-going expansion that led to the currently conditions.

Black hole is a concentration of mass so compact that it creates a region of space from which not even light can escape. The outer boundary of this region is called the event horizon.

Break-up velocity, critical velocity, or critical rotation of a rapidly spinning star is the surface velocity at which the centrifugal force just matches the force of Newtonian gravity. Beyond this point, the star would begin to eject matter from its surface.[1]

Brown dwarf is a substellar object that is too low in mass to sustain the nuclear fusion of hydrogen-1 in its core, which is a characteristic of stars on the main sequence. Brown dwarfs can still generate energy from gravitational contraction and by the fusion of deuterium.