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Big Bang and Universe structure

Mr Healy: Mr Healy
Across
Red shift is caused by the __________ of the universe
Type of galaxy that contains many old, red stars
First element
large body of mostly hydrogen and helium gas which releases light energy and radiation by nuclear fusion.
Down
Galactic ________, where most of Milky Way's stars are located.
Type of nebula that appears blue in color
These slowed down when temperatures dropped to 3000 Celsius
First particles of the universe were quarks and ________