Question

$\huge \colorbox{lightblue}{QUESTION}$
What is in the interstellar medium?

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Answer 1

Answer:

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. ... Velocity is a physical vector quantity; both magnitude and direction are needed to define it.

Answer 2

Answer:

The interstellar medium is where stars are made.

Most of the interstellar medium is composed of hydrogen and helium – interstellar gas – but about 2% is heavier elements and dust. Image via University of New Hampshire Experimental Space Plasma Group.

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