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There are 5,280 feet in 1 mile.
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when there are ten they don't grow so well but when there is less than 10 they tend to grow
Newton's new “reflecting telescope” was more powerful than ... Before Newton, scientists primarily adhered to ancient theories on ... laws of motion laid the groundwork for classical mechanics. Newton's research on motion helped give credibility to the heliocentric view. Newton also helped pioneer telescopic innovations, and he is sometimes credited with inventing the first reflecting telescope. He also conducted experiments using the prism, and developed a theory about the nature of color and light.
A type O star is likely to appear blue.
Not sure but just coming to say good luck and take your time