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Observing
Venus from Earth
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Venus reflects 76% of sunlight
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compare 12% for Mercury
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Mercury is closer to sun,
brighter
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Greatest elongations are
47 degrees
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visible for ~3 hours after
sunset or before sunrise
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easier to see than Mercury
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Ring-like appearance at inferior
conjunction evidence for atmosphere
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similar to why moon turns
orange in lunar eclipse
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Featureless ball to optical
earth telescopes
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evidence for complete cloud
cover
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high albedo (reflectance)
also evidence for clouds
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