yes
Every planet rotates about an axis, so it has an equator in the plane normal to the line between the poles. Every planet is spherical and therefore it can be divided arbitrarily into two hemispheres. If the division is done by the equator, there is a north hemisphere and a south hemisphere.
The circumference at the equator is 15 329 km for the planet Mercury.
The Equator divides the planet into northern and southern hemispheres.
Yes. Mercury rotates, like all the planets. So it has an axis of rotation and that defines the "poles" of the planet. The equator is defined relative to the planet's poles.
the equator
Uranus
The equator is an imaginary line around the middle of the planet. We crossed the equator this morning.
Every line of latitude is parallel to the equator.
The ozone layer covers every bit of planet that is lit directly by the Sun. The sun makes ozone from oxygen. That is why the equator sees no thinning except at the poles where the sun doesn't hit it during the winter.
The equator is a latitude line, so it has no specific longitude. The equator is at 0o north or south. There are many points on the equator, so every point on the equator has a different longitude.
-- If a planet spins, then it has a spin axis. -- If it has a spin axis, then it has poles. -- An equator is just the line made up of all the points that are midway between the poles. So if the planet has poles, then it has an equator. -- Mercury spins.
it is 25,285 miles at the equator