I think venus
It rotates in the "retrograde" direction. "Obliquity" is another way of talking about the tilt of a planet's axis. You might say the planet is "upside down". The direction of the rotation is called "retrograde" ("backwards" compared with the Earth's rotation). Note: there is a complication here about how astronomers define the North pole of a planet, but that's probably an unnecessary complication for most people.
Uranus is the planet that rotates on its side. It takes Uranus 84 Earth years to fully revolve around the Sun.
Venus rotates "upside down" - meaning it rotates on its axis the opposite direction to its orbit around the sun. Uranus orbits somewhat on its side at an angle about 98 degrees to the ecliptic and is also considered retrograde.
Venus rotates once every 243 Earth days and thus is the slowest.
Venus is the planet that rotates in the opposite direction to all the other planets.
Time can never go backwards. You may be thinking of a planet which rotates in the opposite direction to Earth. Venus and Uranus do this.
It means the planet rotates slower. To be precise, the angular velocity is less.
A planet rotates on its axis a point which travels through the north and the south of the planet. On earth the axis is found at the north and south pole of the earth.
Mars
Pretty much every planet has an axis, because an axis is what a planet rotates around. Any planet that rotates has an axis, and pretty much every planet known rotates.
neptune
it rotates quicker
It rotates in the "retrograde" direction. "Obliquity" is another way of talking about the tilt of a planet's axis. You might say the planet is "upside down". The direction of the rotation is called "retrograde" ("backwards" compared with the Earth's rotation). Note: there is a complication here about how astronomers define the North pole of a planet, but that's probably an unnecessary complication for most people.
Uranus. (Earth is not like that.)
it takes 225 earth days to make on revolution around the sun
earth
what does earth spin on besides a inmaginary line? ============== Planet Earth rotates on its axis.