ADMICRO

Read the following passage and choose the best answer: 

       The locations of stars in the sky relative to one another do not appear to the naked eye to change, and as a result, stars are often considered to be fixed in position. Many unaware stargazers falsely assume that each star has its own permanent home in the nighttime sky.

        In reality, though, stars are always moving, but because of their tremendous distances between stars themselves and from stars to Earth, the changes are barely perceptible here. An example of a rather fast-moving star demonstrates why this misconception prevails; it takes approximately two hundred years for a rapid star-like Bernard’s star to move a distance in the sky equal to the diameter of the Earth’s moon. When apparently negligible movement of the stars is contrasted with the movement of the planets, the stars are seemingly unmoving.

This passage would most probably be assigned in the field of ……………..

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