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What are three discoveries that immediately followed the first use of the telescope for astronomy?

Why is it sometimes better to use a small telescope in orbit around the Earth than it is to use a large telescope on a mountaintop?

hat is the light-gathering power of a telescope that is 3 meters in diameter, relative to a 1 -m telescope? What is it relative to a dilated human eye (pupil 6 mm in diameter \() ?\)

True or false? The primary purpose of an astronomical telescope is to magnify images of stars and other objects.

Multiple choice: Which one of the following is not an advantage of the Hubble Space Telescope (Hubble) over ground-based telescopes in gathering information about the Universe? (a) Hubble is better able to collect ultraviolet light. (b) Hubble detects fainter objects at optical wavelengths because it has a darker sky. (c) Hubble detects fainter objects at infrared wavelengths because it has a darker sky. (d) Hubble produces clearer images of celestial objects at optical wavelengths. (e) Hubble was cheaper to build than ground-based telescopes of comparable diameter.

Multiple choice: A ground-based telescope to observe x-rays with x-ray detectors would (a) give astronomers a chance to study the hot interiors of stars and planets; (b) be worthless because x-rays cannot get through the Earth's atmosphere; (c) be worthless because astronomers have not yet devised detectors sensitive to x-rays; (d) be worthless because no astronomical objects emit x-rays; or (e) be useful only to Superman, who has x-ray vision.