Do all the planets rotate on an axis?

Answer 1

Yes. The reason for this is that all planets rotate, and if they rotate, then they must rotate about some axis. The cause of planetary rotation is a bit more complex. The origins of any planet begin in a nebula. Initially, the nebula is very large and has a very, very small amount of angular momentum (spin). As gravity begins to shrink the nebula, it spins faster and faster for the same reason a figure skater spins faster when he/she brings his/her arms closer. After the nebula flattens and forms and accretion disk and a star, the rest of the gas and dust clump together to form planets which still retain the original nebula's angular momentum, which causes them to spin. Since the nebula must have angular momentum in order for planets to form, all planets have angular momentum, and all planets rotate. If all planets rotate, then all of them must have an axis.

Answer 2

No, there are a variety of different tilts represented here in our own solar system. Earth has about a 23.5 degree tilt; Venus is tilted upside-down (i.e., it rotates opposite the direction it orbits) and Uranus rotates on its side at about 98 degrees to the plane of the ecliptic.

Answer 3

Yes, all planets in our solar system rotate on an axis. Rotation on an axis causes day and night cycles on a planet.

Answer 4

out of what we have discovered so far, Mercury does not have a tilt

Answer 5

yes.

Answer 6

Yes. If you didn't know, the equator is an imaginary line - not some ring that just magically appeared.

Answer 7

Yes. If a planet happens not to be rotating in the sidereal sense, then it is rotating relative to its star. But for a planet, some form of rotation is inevitable.

Answer 8

No planet has lines of latitude or longitude, it is simply a cartographers convention on maps of the Earth.

Answer 9

Yes.

Answer 10

yes they do