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Question
Living cells have already been recreated in our laboratories.Answer
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Related questions
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Describe the reasoning leading to the idea that the number of technological civilizations in the galaxy is equal to the average lifetime of a technological civilization.
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A galaxy with a blueshift is moving ________ Earth.
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Hubble divided the spirals into normal and ________ categories.
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The spiral arms are blue from the presence of Population ________ stars in them.
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Why is the energy source for active nuclei like Seyferts thought to be compact?
A) The sources appear to be single stars in photos.
B) Their energy appears to be non-stellar synchrotron radiation.
C) The light can vary over short time intervals.
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In active galaxies, their central engines may be temporarily fed by
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What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?
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Virtually the entire disk of the Galaxy has been mapped using the ________ wavelength.