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?
86Most astronomers believe that these celestial bodies are at the center of quasars and are the main reason for their large energy emissions?
97Whos book, titled concerning the revolutions of celestial spheres, is considered to mark the birth of modern astronomy?
73If the temperature of a star increases from 10,000k to 30,000k, by what factor will the rate of energy radiated per second increase?
90
What is the speed of solar wind?
Explain how was the moon formed?
Which star is called the polaris?
The celestial coordinate analogous to latitude is called?
How important is recording observations in Astronomy?
Why stars are seen in colours?
Tell me how many moons does neptune have?
What percent of stars in the sky that appear to be single stars are actually binary stars?
Which is largest and most massive star?
Which is the landing craft used by armstrong on the moon?
What is the expected life of solar system?
Which is the star nearest to earth?
Tell me how many moons does jupiter have?
Which moon is the only other body in our solar system, besides the earth, that has an atmosphere of mostly nitrogen?
How many stars are there in the whole universe?
