What percent of stars in the sky that appear to be single stars are actually binary stars?
Answer / Nidhi Saxena
Up to 70% of visible stars may be part of binary systems
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Tell me how long is it until our solar system ceases to exist?
How can space expand faster than the speed of light?
Why these stars are called novae?
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?
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What is difficult about being an Astronomer?
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