Gk1 Flashcards
(11 cards)
What is an astronomer?
A scientist who studies the sun, moon, stars, and planets.
Who was Johannes Kepler?
A German astronomer who discovered three major laws of planetary motion.
What did Galileo Galilei discover in 1610?
Four moons revolving around Jupiter.
Who proposed that the Sun is at the center of the universe?
Nicolaus Copernicus.
Who discovered Uranus?
William Herschel.
What was Ptolemy’s first major astronomical work?
The Almagest, completed about 150 CE.
Who was Tycho Brahe?
A Danish astronomer who developed astronomical instruments and found the accurate positions of more than 777 fixed stars.
What comet did Edmond Halley predict?
A comet with a return period of every 76 years.
What is the only surviving work of Aratus?
Catasterisms, a book about the constellations.
True or False: Galileo was one of the first scientists to use a telescope to examine the sky.
True.
Fill in the blank: _______ was the first to discover the four moons of Jupiter.
Galileo Galilei.
