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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
