Astronomers Crossword Puzzle

QUESTIONS LIST:

• aristotle: greek philosopher that believed in the geocentric model of the solar system.
• ptolemy: egyptian mathematician, astronomer, and geographer who wrote the "almagest" and believed in the "wheels on wheels" concept.
• copernicus: polish astronomer who published the first detailed heliocentric model based on the "wheels on wheels" concept.
• brahe: german scientist who is known for the laws on planetary motion.
• galileo: italian mathematician and scientist who made contributions with the early use of the scientific method and improving the telescope.
• kepler: german astronomer and mathematician who observed planets to not orbit in circular patterns, but rather ellipses.
• newton: english mathematician who invented calculus and is known for the theory of gravity.
• plato: thought the heavens were a perfect circular shape and therefore believed in the geocentric model of the universe.
• hubble: american astronomer who studied the light emitted from galaxies and is known for discovering red shifted spectrums.
• sagan: american astronomer who is known as a pioneer in exobiology and famously said "we are made of star stuff"