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What is the significance of the object Sagittarius A* ("Sagittarius A-star") in our Galaxy?
Q22: At what stage of its evolutionary life
Q25: The person who developed three laws of
Q25: If you use a commercial firm to
Q26: The four physical forces at work in
Q44: Quasars have high redshifts,indicating that they are<br>A)
Q48: The present universe seems to require a
Q50: A neutron star will be detected from
Q86: On a particular night,Jupiter subtends an angle
Q99: What appear to be the characteristics of
Q114: Sunlight is made of a mixture of