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What term is most commonly used to refer to the actual motion that stars have in relation to each other, and over many years will lead to changes in the shapes of constellations?
111Most astronomers believe that these celestial bodies are at the center of quasars and are the main reason for their large energy emissions?
139Whos book, titled concerning the revolutions of celestial spheres, is considered to mark the birth of modern astronomy?
93If the temperature of a star increases from 10,000k to 30,000k, by what factor will the rate of energy radiated per second increase?
114
Does astronomy help you with other things in life? If yes, what?
Tell me how many moons do ceres have?
Explain how is venus like earth?
This powerful telescope weighs about 11 tons, has a primary mirror 7.9 feet in diameter, and orbits about 380 miles above the earth?
What is difficult about being an Astronomer?
The work of this harvard college observatory scientist made possible the first accurate determination of extragalactic distances by what is often called henriettas law?
Which of the is not another name for the pleiades?
How many planets are in the new solar system?
What is the name for the celestial body of interstellar gas and dust where stars are sometimes born?
Does non-carbon based life exist somewhere in the universe?
Explain how did the moon form?
According to keplers third law, plotting the squares of the periods of the planet against the cubes of the semi- major axes of their orbits will result in what sort of graph?
Tell me how long is it until our solar system ceases to exist?
What is the expected life of solar system?
Which space flight sent the pictures of moon’s farside and when?
