They see the Northern and Southern constellation stars respectiively.
That happens because they are on opposite sides of the Earth so they see a different part of the sky.
The stars that you would see at night in 6 months time.
No, but the fact that the Earth orbits the Sun does do that. Because of the way sunlight ins scattered through our atmosphere (and because the Sun is incredibly bright), we cannot see stars that appear near the Sun in the sky; the Sun has to go below the horizon for any stars to be visible. Stars that are near the Sun in the sky are not visible. So as the Earth goes around the Sun, a different set of stars appear to be "behind" the Sun, near it in the sky, each season.
There is only one star in our Solar System See related question.
At the equator, you will see no circumpolar stars.
They see the Northern and Southern constellation stars respectiively.
That happens because they are on opposite sides of the Earth so they see a different part of the sky.
Yes.
Stars do have different colours. If you look carefully, you will see that there are differences between the colours of stars. Some are very different in colour to others, but you will only notice if you look at them carefully.
You can not see the same stars all around the world. There are different star alignments in different parts of the world. For example, you can not see a star that is in Africa in the United States.
See related link
From the ground you see a different area of the universe - the Earth is round, and from different latitudes in north and south you see a different perspective.
No, because one part is at day-time, they cannot see any stars. If they could, they would see different stars, for they are on the opposite side of Earth.
the earth's rotation
The constellations are imaginary patterns that one can see in the stars at night. In reality the different stars a light-years away.
No, they are completely different. See related questions
You can tell the time of year by looking at the stars in the sky. The ones you see tonight are the same ones you will see in any year on this date. You will see the same ones tomorrow night, but if you go out at the exact same time to look as you did tonight, you would see they were in slightly different positions. As the year continues you will notice that the stars you see are moving and you will start to see different ones. In 6 months from now, most of the stars you will see will be different than what you can see tonight, except for some that are right overhead. So if you can learn what stars are seen at what time of year, you can know what time of year it is and even work out what time it is. That is what people did long, long ago.