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rayreid astronomy

unit 1 test

Earth center of the universe (geocentric) Ptolemy
sun was the center of the universe (heliocentric) Coperincus
corrected the heliocentric model by stating that planets travel in elleptical orbits Kepler
stated that gravity is the force holding the earth Newton
first to use telescope Galileo
large group of stars and other celestial objects galaxy
how galaxies are classified shape
an oval shaped galaxy elliptical
a galaxy with arms spiral
what seperates the inner planets from the outer planets astteriod belt
hottest planet venus
coldest INNER planet Mars
where energy is produced from the sun core
when hydrogen combines with helium and energy nuclear fusion
what a starscolor tells us it's temperature
a star that appears to circle around Polaris circumpolar
when a star runs out of much of it's energy and begins to expand blackhole
death of a star by explosion supernova
a small star with a enormous amount of gravity neutron star
tool used to find the altitude of a star astrolabe(quadrant)
the angle between the horizon and a star zenith
Created by: rayreid1