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Astronomy 1.1

Astronomy Quiz 1.1 Winneconne

QuestionAnswer
Showed that planets and moons stay in orbit due to gravity Sir Isaac Newton
was one of the first persons to use a telescope to observe celestial bodies Galileo Gallilei
developed a theory of a sun-centered universe Copernicus
stated that planets move in elliptical orbits around the sun Johannes Kepler
used a mural quadrant to measure the positions of planets and stars Tycho Brahe
developed a theory of an Earth-centered universe in 140 CE Ptolemy
proved the existence of galaxies other than the Milky Way Edwin Hubble
the time required for the Earth to orbit once around the sun Year
roughly the amound of time required for the moon to orbit once around the Earth Month
the time required for the Earth to rotate once on its axis Day
Created by: wollermh
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