Chain reactions

Fission neutrons

Fissionable isotopes

Nuclear reactor

Nuclear fusion

Fusion reactions

Protons fuse together to form helium nucleus

Fusion reactors

Fusion reactors future

Radioactivity all around us

Chernobyl p

The early universe

Galaxies

Dark Age of the unive sprse

Force of gravity,

History of a star:
Birth of a star

History of a star:
Shining stars

History of star:
End of star (Sun size or smaller)

History of a star:
End of star (Stars bigger than the Sun)

Life cycle of a sun

Remnants after a supernova occurs

Birthplace of light elements

Birthplace of heavy elements

Formation of solar system

Life on planyets

Planet Earth