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Astronomy 1.1
Astronomy Quiz 1.1 Winneconne
Question | Answer |
---|---|
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 |