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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?
109Most astronomers believe that these celestial bodies are at the center of quasars and are the main reason for their large energy emissions?
137Whos book, titled concerning the revolutions of celestial spheres, is considered to mark the birth of modern astronomy?
89If 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
Which of the is not another name for the pleiades?
Explain how is saturn like earth?
How did the moon form?
Astronomers usually detect the electromagnetic emissions of a single neutron star in what single form?
Which book of aryabhatta is regarded as a great contribution in astronomy?
Which was the vehicle used for the first landing on the moon?
How many moons does jupiter have?
The magellan clouds are actually what type of celestial body?
Explain how fast is the solar wind?
Is the gravitational pull on an object equalized if the object is at the centre of a planet, i.e. Surrounded by the mass of the planet, which is creating the gravity?
Of the three types of meteorites, which is the most common, in terms of the number of samples, to fall to earth in recorded history?
Tell me how many moons does neptune have?
Which is the first unmanned space vehicle which landed on the moon?
Explain the venus atmosphere.
A meteor that reaches the surface of the earth is more accurately called a?
