Uranus.
The question doesn't make much sense. I think it probably should say: "an axis parallel to its orbit plane". In that case, the answer is that Uranus (not Neptune) is the only planet that rotates on an axis parallel (roughly) to its orbit plane.
Uranus has an axial tilt of 97.86 degrees, which is near horizontal.
This must be Uranus. "On its side" isn't a very scientific way of putting it. It means that the planet's axis is tilted at about 90 degrees (98 degrees actually) from the perpendicular to its orbital plane.
The orbital plane of a stellar system can be oriented in any way in relation to the plane of the Milky Way Galaxy. Our solar system, for example, is almost perpendicular to the plane of the Milky Way Galaxy.
That point is called apogee and it rotates round the orbital plane every 19 years.
The question doesn't make much sense. I think it probably should say: "an axis parallel to its orbit plane". In that case, the answer is that Uranus (not Neptune) is the only planet that rotates on an axis parallel (roughly) to its orbit plane.
The planet Uranus rotates on an axis that is tipped about 90 degrees to the ecliptic.
The moon rotates counterclockwise just like Earth!!!!!!!!!!!!!!
Pluto
Pluto
Uranus has an axial tilt of 97.86 degrees, which is near horizontal.
The reverse of the standard rotation, i.e. in the opposite direction of the orbital motion, is called retrograde. This term is most aptly applied to Venus, which rotates east-to-west (clockwise) while retaining its perpendicular orientation to its orbital plane.
Uranus.
This must be Uranus. "On its side" isn't a very scientific way of putting it. It means that the planet's axis is tilted at about 90 degrees (98 degrees actually) from the perpendicular to its orbital plane.
I'm pretty sure its Pluto (:
No. It rotates in an axis that is about 23° tilted from perpendicular to the plane of the ecliptic. Uranus is the planet that is most tilted on its side, with an axial tilt of 97.77°.
Uranus.