What is the magnetic effect of the earth?
how stars comes from different sizes
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What is the sun?
What are the stars?
What are the forces which keep a flying plane in a equilibrium?
Explain the moon?
Why countdown while firing a aeroplane?
What is the distance of the earth from the moon and the sun?
What is astronomical telescope?
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)
What is equatorial and polar diameter?
What is eclipses?
Explain shape of the earth?
What is lunar eclipse?
