The answer is NOT Venus. It is MERCURY. Venus takes longer to spin once than does Mercury. However Venus spins in the opposite direction to Mercury. The result is that Mercury has the longest "sunrise to sunrise" times.
One Earth day on Mercury lasts two Mercurian years, sunrise to sunrise. It is daytime for one Mercurian year, and nighttime for one Mercurian year.
It sounds complex! It sort of is. Mercury revolves around the sun very quickly, but rotates around its own axis very, very slowly. One day on Mercury (sunrise to sunrise) is longer than one year on Mercury (one orbit around the Sun)!Mercurian Day: A day on Mercury equals 176 Earth days (from sunrise to sunrise, or the equivalent of a 24 hour day on Earth). It is daytime for one Mercurian year, and nighttime for one Mercurian year. (It used to be thought that Mercury always kept the same side side towards the sun, but this is not true.)Mercurian Year: A year on Mercury equals 87.97 Earth days; it takes 87.97 Earth days for Mercury to orbit the sun once.
You will never see Mercury on a dark sky. The reason is that Mercury is the closest planet to the Sun, and so we can only see it shortly before sunrise or shortly after sunset. The sky is always still fairly light.
Mercury was discovered visually by looking at the sky shortly before sunrise or shortly after sunset. It was discovered in antiquity.
Mercury has a double sunrise.
The Double Sunrise was created in 1943.
You can only see Mercury at sunrise and sunset.
On Mercury, just like on Earth and on every other planet, the sun is rising somewhere every minute of every day.
The answer is NOT Venus. It is MERCURY. Venus takes longer to spin once than does Mercury. However Venus spins in the opposite direction to Mercury. The result is that Mercury has the longest "sunrise to sunrise" times.
It takes about 59 Earth days (58.66 days) for Mercury to make one rotation.However, its "day" is extended due to the extremely short orbital period of 88 Earth days : a "sunrise to sunrise" solar day is 176 Earth days long (2 Mercury years).This is the source of the saying "On Mercury, a day is twice as long as a year."
One Earth day on Mercury lasts two Mercurian years, sunrise to sunrise. It is daytime for one Mercurian year, and nighttime for one Mercurian year.
It sounds complex! It sort of is. Mercury revolves around the sun very quickly, but rotates around its own axis very, very slowly. One day on Mercury (sunrise to sunrise) is longer than one year on Mercury (one orbit around the Sun)!Mercurian Day: A day on Mercury equals 176 Earth days (from sunrise to sunrise, or the equivalent of a 24 hour day on Earth). It is daytime for one Mercurian year, and nighttime for one Mercurian year. (It used to be thought that Mercury always kept the same side side towards the sun, but this is not true.)Mercurian Year: A year on Mercury equals 87.97 Earth days; it takes 87.97 Earth days for Mercury to orbit the sun once.
It takes about 59 Earth days (58.66 days) for Mercury to make one rotation.However, its "day" is extended due to the extremely short orbital period of 88 Earth days : a "sunrise to sunrise" solar day is 176 Earth days long (2 Mercury years).This is the source of the saying "On Mercury, a day is twice as long as a year."
It depends on the relative positions of Earth, Mercury, and the sun at the time. Sometimes Mercury is hidden behind or in the glare of the sun. At other times Mercury may be seen shortly before sunrise or shortly after sunset.
You will never see Mercury on a dark sky. The reason is that Mercury is the closest planet to the Sun, and so we can only see it shortly before sunrise or shortly after sunset. The sky is always still fairly light.
at nightnime Depending on Mercury's position, the longest you can see it, is about 1 hour after sunset or 1 hour before sunrise, and when Mercury is at a right angle from the sun as viewed from Earth. This is when Mercury appears to be farthest from the sun. As Mercury orbits the sun, it appears to be closer to the sun, and will be visible for a shorter amount of time. You will need to have an unobstructed view of the horizon.