astronomers and stars Flashcards
Ptolemy
his controversial geocentric theory of the universe.
Copernicus
Polish astronomer and mathematician known as the father of modern astronomy
Brahe, Tycho
which contained elements of both the Earth-centered Ptolemaic system and the Sun-centered Copernican system.
Kepler, Johannes
best known for his three laws of planetary motion.
Galileo
Italian astronomer, mathematician, and physicist.
Newton, Isaac
English mathematician and physicist;
Hubble, Edwin
An American astronomer of the twentieth century.
Ursa major
a constellation of the northern sky, at about 10 hours 40 minutes right ascension and 56° north declination.
Ursa minor
at about 15 hours right ascension and 80° north declination, and seven of whose stars outline the Little Dipper.
Orion
a distant bright emission nebula the Orion Nebula associated with a system of giant molecular clouds and star formation.
Canis major
constellation built around Sirius, known as the Dog Star, the brightest star in the sky.
Cassiopeia
a constellation of the northern sky easily recognized by a group of five bright stars forming a slightly irregular W.
Red giant
a dying star in the final stages of stellar evolution
White dwarf
a dying star has exhausted its nuclear fuel and expelled its outer layers to form a planetary nebula.
Main-sequence star
a continuous and distinctive band of stars that appears on plots of stellar color versus brightness.
