Ancient Astromoners Crossword Puzzle

QUESTIONS LIST: lunar eclipse: what is it called when the earth is between the moon and the sun?, retrograde motion: what is it called when the planets seem to make a loop in the sky?, ptolemy: who explained retrograde motion?, heliocentric: what is it called when the sun is in the middle of the solar system?, weight: what is it called when the amount of gravity pushing down?, mass: what is the amount of matter in an object?, revolution: what causes years?, aristotle: who thought the solar system was geocentric and was believed for centuries?, geocentric: what is it called when the earth is in the middle of the solar system?, kepler: who discovered the oval shape movements of the planets around the sun?, galileo: who was on trial for what he was teaching?, aristarchus: who measured the distance between the earth and the sun?, solar eclipse: what is it hen the moon is between the earth and sun?, rotation: what causes day and night?, copernicus: who believed that the solar system was heliocentric but didn't have proof?