Physics

Physics, 23.09.2019 02:30, nicollexo21

When astronomer vera rubin began to measure the rotation curves of spiral galaxies in the 1960s, she found?

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Physics, 12.07.2019 01:00, toxsicity

Which discovery by astronomer vera rubin prove the existence of dark matter? galaxies exist outside of the milky way. the expansion of the universe is accelerating. galaxies spin faster than they should, based on their visible matter. gas giants form farther from the sun, where temperatures are cooler.

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Geography, 14.07.2019 16:30, Lalagrl

An astronomer studying a distant cluster of galaxies finds that several of the galaxies are spiral shaped, with a nuclear region of moderate size and moderately wound arms. how should the astronomer classify these galaxies?

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Geography, 31.07.2019 04:20, nekathadon

How do we know there is dark matter in other galaxies? a. it occasionally lum inesces b. flat rotation curves in spiral galaxies c. matter rotates slower the farther from the center of a spiral galaxy d. it blocks our view in elliptical galaxies

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Physics, 26.08.2019 23:30, andrewlawton8125

Spiral galaxy rotation curves are generally fairly flat out to large distances. suppose that spiral galaxies did not contain dark matter. how would their rotation curves be different? (a) the orbital speeds would fall off sharply with increasing distance from the galactic center.(b) the rotation curve would be a straight, upward sloping diagonal line, like the rotation curve of a merry-go-round.(c) the orbital speeds would rise upward with increasing distance from the galactic center, rather than remaining approximately constant.(d) the rotation curve would look the same with or without the presence of dark matter.

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When astronomer vera rubin began to measure the rotation curves of spiral galaxies in the 1960s, she...

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