The Big Bang Theory is the prevailing cosmological model for the universe from the earliest known periods through its present expansion and cooling.

Big Bang Nucleosynthesis is the process by which the lightest elements (hydrogen and helium) were formed in the early universe.

Stellar Nucleosynthesis is the process by which heavier elements are formed in stars.

Supernova Nucleosynthesis is the process by which elements heavier than iron are formed in supernovae.

Stellar Evolution Theory describes the evolution of stars from their formation to their eventual death.

The Main Sequence is the stage in a star's life when it is fusing hydrogen into helium in its core.

The Red Giant is the stage in a star's life when it has exhausted its hydrogen fuel and begins to fuse helium in its core.

The White Dwarf is the stage in a star's life when it has exhausted its helium fuel and begins to fuse carbon in its core.

The Supernova is the stage in a star's life when it explodes violently, ejecting its outer layers into space.

The Neutron Star is the remnant left behind after a supernova.

The Black Hole is the remnant left behind after a massive star collapses in on itself.

Cosmic Evolution is the process by which matter is recycled from one generation of stars to the next.

Cosmic Evolution Theory describes the evolution of the universe as a whole.

The Theory of Evolution describes the evolution of life on Earth.

Natural Selection is the process by which organisms adapt to their environment over time.