Briefly explain the following concepts: (a) The reason that X-ray telescopes are placed in the space. (b) The Oort Cloud (c) How a main-sequence star can stay stable? (d) The vernal equinox (both the day, and the point)

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A: The one common problem in Phillipines is drug addiction in the society mainly the youth.

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A: Building healthy stakeholder connections requires a well-developed stakeholder communications plan.

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A: New moon is when the sun and moon are aligned with the Earth and sun on opposite sides of the moon.…

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A: Schwarzschild radius was first discovered by Karl Schwarzschild in 1916. It is defined as the radius…

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A: The Milky Way incorporates our Solar System, with the name depicting the universe's appearance from…

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A: Manipulation of insider information to benefit an investor.

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Q: Gravity is responsible for which of the following characteristics of a galaxy?

A: Gravity is responsible for the motion of all the objects within it.