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A variable star is one whose brightness alternately increases and decreases. For one such star, the time between periods of
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2. asked by TayB
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A variable star is one whose brightness alternately increases and decreases. For one such star, the time between periods of
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2. asked by TayB
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Delta Cephei is one of the most visible stars in the night sky. Its brightness has periods of 5.4 days, the average brightness
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Question: According to the video, how did Hertzsprung and Russell set up their data chart for star evolution?(1 point) Responses
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2. asked by Landon Sharp
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The brightness of a star depends on how much light is released by the star and how far the star is from Earth. There are two
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The brightness of a light bulb varies inversely as the square of the distance from the source. If a light bulb has a brightness
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The brightness of a light bulb varies inversely as the square of the distance from the source. If a light bulb has a brightness
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Magnitude is used to show the brightness of one object compared with the brightness of another object with the ____ magnitude of
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A variable star is one whose brightness alternately increases and decreases.For the variable star Delta Cephei, the time between
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2. asked by Jo
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What is apparent brightness and absolute brightness in Science
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