astronmers and stars Flashcards
Ptolemy
He considered earth the center of the universe.
Copernicus
that the sun is at near the center of the universe and that the earth spins of its axis daily, revolves around the earth.
Brahe, Tycho
he was known for his accurate and comprehensive astronomical and planetary observations.
Kepler, Johannes
he is best known for his laws of plantery motion, based o his works.
Galileo
he was known for the discovery of the four massive moons of Jupiter.
Newton, Isaac
he laid the blueprints for his three laws of motion.
Hubble, Edwin
he discovered cosmos
Ursa major
is a constellation in the northern sky. its name means greater she bear. the big dipper
Ursa minor
it is known as the little bear. the little dipper.
Orion
it was named after a hunter in Greek mythology.
Cains major
its name is the greater dog.
Cassiopeia
she was a greek goddess who died
Red giant
a very large star of high luminosity and low surface temperature.
White dwarf
a small very dense star that is typically the size of a planet.
Main-sequence star
is any star fusing hydrogen in its core and has a stable balance of outward pressure from nuclear fusion and gravitational forces pushing inward.
