'Hemisphere' means 'half a sphere' So every sphere has two halves. So every planet has two hemispheres. You can divide the planet into hemispheres any way you like. It's common to talk of the northern hemisphere and the Southern Hemisphere, or the eastern and western hemispheres, but if you want to suggest your own hemispheres then that's your choice.
Hemisphere.
Any half of a planet with a great circle as a boundary can be called a hemisphere. Most often the equator is used as a boundary dividing the planet into a northern hemisphere and a southern hemisphere. The Earth has an accepted "prime meridian" (which runs through Greenwich England) and the continuation of that meridian divides the Earth into an eastern and a western hemisphere.
The Northern Hemisphere is the half of a planet that is north of equator-the word hemisphere literally means 'half sphere'.
There is only one equator on Earth. It is an imaginary line that divides the Earth into the Northern Hemisphere and the Southern Hemisphere.
Mercury is the planet that orbits the sun every 165 days. It is the closest planet to the sun in our solar system and has the shortest orbital period.
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.
Hemisphere.
Antarctica lies in the Southern Hemisphere on planet earth.
Simply put, because it is north of the equator, you can see it on a globe. The northern hemisphere of any given planet is always the upper half of the planet.
Any half of a planet with a great circle as a boundary can be called a hemisphere. Most often the equator is used as a boundary dividing the planet into a northern hemisphere and a southern hemisphere. The Earth has an accepted "prime meridian" (which runs through Greenwich England) and the continuation of that meridian divides the Earth into an eastern and a western hemisphere.
The planet's rotation.
If it is fall (autumn) in the northern hemisphere, then it is spring in the southern hemisphere, and vice versa.
The Northern Hemisphere is the half of a planet that is north of equator-the word hemisphere literally means 'half sphere'.
Antarctica is in the Southern Hemisphere.
The planet Earth can be divided in half two different ways. It can be divided into the Eastern Hemisphere and the Western Hemisphere, or the Northern Hemisphere and the Southern Hemisphere.
The Northern Hemisphere is the half of a planet that is north of equator-the word hemisphere literally means 'half sphere'.
Greece is in the northern hemisphere and the eastern hemisphere, or in other words, in the north-east quadrant of the planet.