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When was the first american manned space mission to moon begun?
In the doppler effect, what is the correct term for the change in the color of light when an object that is emitting light is moving toward the observer?
If the temperature of a star increases from 10,000k to 30,000k, by what factor will the rate of energy radiated per second increase?
What is heavenly ganges ( milky way ) galaxy?
Which is the only star of the milky way galaxy?
Tell me how many black holes are there?
Describe the atmosphere on Venus, Mar and Jupiter.
Who is the known as the father of indian astronomy?
In which year was western astronomy included in the indian curriculum?
Explain how is saturn like earth?
What substance is responsible for neptunes blue-green color?
How old is our earth?
How far from earth, is the moon?
Is pluto really a planet?
Explain how big is venus?
