Changes in the composition of the light of a supernova--an exploding star--reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas.
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Areveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas
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Breveals not only what chemical elements are in the explosion but also the speed at which the outer layers of stellar gas are expanding
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Cnot only reveal the chemical elements in the explosion but also the speed of the expanding outer layers of stellar gas
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Dnot only reveal what chemical elements are in the explosion but also the speed of the outer layers of stellar gas when they are expanding
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Ereveal not only the chemical elements in the explosion but also the speed at which the outer layers of stellar gas are expanding
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