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Which of the pulsating variable star whose brightness varies in a very regular time period of about 1-50 days?
Which is the star nearest to earth?
Explain how is venus like earth?
Who is the known as the father of indian astronomy?
Why stars are seen in colours?
What is the effect of gravity at the center of a planet?
How many planets are now in the solar system?
The first man who walked on the moon?
What is heavenly ganges ( milky way ) galaxy?
Rounded off to the nearest trillion, how many miles is in a light year?
An emission or bright line spectrum consists of?
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?
How many moons does saturn have?
What moon of neptune orbits in a retrograde direction?
