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Who designed “geoglyphs”? Who is credited with the concept of gravity? Who was the first to promote the heliocentric universe? Oldest astronomical time piece in existence? Famous for the invention of telescope? Telescope that covers 1/3 of the sky and collects radios waves that is sent to a receiver. Telescope that uses MIRRORS? Telescope that uses LENSES? Who worked in a great observatory in Europe and made the most accurate observations of the universe? Developed the 3 laws dealing with ellipses? Provided observational proofs that the earth is a sphere? List one problem with optical astronomy. Collection of stars, dust, and gas bonded together by gravity? An instrument that collects electromagnetic radiation from the sky? What is the apparent backward motion of planets called? Shape of the orbit around the sun? What causes day and night? Described as the power or the strength of the telescope? The diameter of the lens or the mirrors? List four reasons people began watching the night sky. Which has the largest effect on eccentricity (how elliptical the shape is), the distance between the foci or length of the ellipse? What is the equation for eccentricity? *Using e, d, and L… If the area of sector A of a planet around the sun is 3947 m^2, according to Kepler’s second law the area of another sector (sector B) that represents the same amount of time should be? What is right ascension AND what unit is it measure in? What is declination AND what unit is it measured in?