What are the stars?
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Explain the moon?
In universe there exist temperature of 1000000 degree Centigrade, does there also exist the temperature of -1000000 degree centigrade ?? (in order to satisfy newton's second law)
Explain the planets?
Explain shape of the earth?
who wroe earthsasthra
Magnetic effect of the earth.
What are the forces which keep a flying plane in a equilibrium?
Shape of the earth
Distance of the earth from the moon and the sun.
how many planets are found till now?
How much total days of 9 planet's which revolve around sun?
What is solar eclipse?