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the universe (stars (ice giant, big red giant, super red giant, white…
the universe
stars
ice giant
big red giant
super red giant
white dwarf star
neutron star
low mass stars
massive stars
big band theory
cosmic background radiation
red shift
Ptolemy
planetary nebula
supernova
black hole
solar system
planets
mars
earth: home planet with water
uranus
venus
mercury
jupiter: largest gas planet in our s.s.
saturn
neptune
our moon
terrestrial planets:planets outside our s.s.
gas giant: a large planet with the consistency of gas
sun: our main star that is essential for our s.s.
astronomers
kepler
Galileo
geocentric model: the sun and earthing in orbit