27.3 days
Mercury is probably the closest with a sidereal rotation period of 58.646 days
Since the moon always has the same side facing earth -- has always been so, I guess? -- one rotation is equal to one revolution around the earth, so about 28 earth days.
The moon spins once on its axis every month; one sidereal period around earth is equal to one complete rotation on its axis. If the moon did not rotate, all of its surface would be visible from earth over the course of a month.
The moon takes approximately 27.3 days to complete one rotation on its axis. This period is known as its sidereal rotation period and is the same as its orbital period around the Earth.
because of the tilt of both the moon and the earth on their rotation axis
27.32 days (rounded)
Mercury
Mercury
Mercury
This is because the moon's rotation on its own axis exactly matches its rotation around the earth, meaning the same face of the moon is always facing the earth
-- The Earth rotates on its axis in roughly 4 minutes less than 24 hours.-- The Moon revolves around the Earth AND rotates on its axis in 27.32 days.-- The Earth revolves around the sun once a year.
Mercury is probably the closest with a sidereal rotation period of 58.646 days
Since the moon always has the same side facing earth -- has always been so, I guess? -- one rotation is equal to one revolution around the earth, so about 28 earth days.
-- The Earth rotates on its axis in roughly 4 minutes less than 24 hours.-- The Moon revolves around the Earth AND rotates on its axis in 27.32 days.-- The Earth revolves around the sun once a year.
The moon spins once on its axis every month; one sidereal period around earth is equal to one complete rotation on its axis. If the moon did not rotate, all of its surface would be visible from earth over the course of a month.
The moon spins once on its axis every month; one sidereal period around earth is equal to one complete rotation on its axis. If the moon did not rotate, all of its surface would be visible from earth over the course of a month.
The moon takes approximately 27.3 days to complete one rotation on its axis. This period is known as its sidereal rotation period and is the same as its orbital period around the Earth.