GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A scientist studies a light from a distant galaxy. The light from the galaxy shows a shift to longer wavelengths. What can scientist conclude about the galaxy?
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The galaxy is orbiting faster than the Milky Way.
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The galaxy is moving closer to Earth.
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The galaxy is stationary in the universe.
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The galaxy is moving farther away from Earth.
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Explanation:
Detailed explanation-1: -The shift of light toward longer wavelengths indicates that most galaxies are moving away from Earth.
Detailed explanation-2: -Doppler Red-Shift Evidence The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.
Detailed explanation-3: -Astronomers viewing light from distant galaxies observe a shift of spectral lines toward the red end of the visible spectrum.
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