big bang theory

Created by shannon_g 

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the big bang

a violent explosion occured 13.7 billion yrs and since then has contiuned expanding at an increasing rate

reasons to believe BB

radio and microwaves are still being picked up in space and in our atmosphere

telescopes-radio

Parkes Radio Telescope
can operate all day through cloud

telescopes-optical

use light
can only operate at night with no clouds

high energy waves

used to study dust, gas, and nebulas

galaxy

billions of stars
milky way

nuclear fusion

the way in which stars create energy by constantly reacting hydrogen to make helium

star life cycle

nubela, star red giant, red dwarf, white dwarf, supernova
some stars explode called supernovas (collapse, explode, collapse again) and some create black holes.

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