What is that bright white 'star' in the morning sky? The planet Venus is about to reach its brightest of the year—and it will be visible close to Mercury.
Orbit Of Venus Explained
Venus will reach that threshold on Wednesday. “Whether it’s following the sun or leading it, Venus appears at its brightest about one month before or after its conjunction with the sun—that is the time when it overtakes us in its smaller orbit,” said Kerss. Venus takes 225 days to orbit the sun, so as well as orbiting the sun faster than Earth it always appears relatively close to the sun., something astronomers call inferior conjunction.
Another reason why Venus is so bright is that it’s a cloudy planet. Its global cloud cover—made from sulphuric acid—reflects a lot of sunlight, making it seem brighter than it would otherwise be.... [+]The best time to see Venus at its brilliant best this week is between it rising about two hours before, and sunrise itself. Just look east—you won’t be able to miss it. However, if you look from about an hour before sunrise, you’ll also see tiny Mercury low in the east beneath Venus.
Mercury will be in the constellation Leo, the lion, with its bright star Regulus shining roughly between the two planets. Later this week Mercury will reach its great elongation east—the farthest it gets from the sun in the morning sky. Venus has an eight-year cycle, as seen from Earth, in which it orbits the Sun 13 times and makes eight apparitions as either the “Evening Star” or “Morning Star.”
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