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Topic 10/12: Astrophysics and cosmology

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gravity

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Terms in this set (33)

the force of attraction between all masses in the universe

the cosmic explosion that is hypothesised to have marked the origin of the universe around 13.7 billion years ago

to increase by growth or addition; for example large amounts of stars and objects due to gravity

the combination of the nuclei of small atoms to form a larger nucleus; releases energy

nuclear fission

nuclei of isotopes split apart when struck by neutrons (also produce neutrons - chain reaction)