What is astronomical telescope?
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Magnetic effect of the earth.
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brief notes on The sun
Equatorial and polar diameter.
What is the weight of the earth?
What is solar eclipse?
Describe the Comet and planet?
Explain the Eclipses ?
What is equatorial and polar diameter?
What are the forces which keep a flying plane in a equilibrium?
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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)