Researches at MIT's Laboratory for Nuclear Science are developing new detectors in order to measure the direction from which the wind of dark matter blows on Earth. Which of the following is used as direct evidence of the existence of dark matter?
W) Flattened galaxy rotation curve
X) Splitting of spectral lines from sources near black holes
Y) Inertial drag of objects moving through space
Z) Light scattering as it passes through empty space
✔️Answer:W) Flattened galaxy rotation curve
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