The starts don't come out at night, there are always there. It's that we can only see them at night because when the sun goes down, the sky gets dark and it becomes easier to see them.
Stars shine all the time but you can only see them at night due to the darkness.
Bellatrix is in the same galaxy that we are in: the Milky Way. All the stars you see at night are in the Milky Way.
No, stars come in many different sizes, masses and densities. Further, a star will change its size over its lifespan.
None at all, the stars are all in the sky they are mostly visible at night.
Yes, all stars have a relative position and they al move within certain limits. Most stars move visually very slowly, so the Greeks and Romabns would have seen nearly the same night sky as we do.
Because not all stars are supposed to be in the sky at night. There are day stars, like the Sun (it's our closest star). Furthermore, the Earth is constantly spinning. This makes the Sun, Moon, and the Stars appear to rise and set each day/night. The Sun itself is spinning around the Milky Way Galaxy's center, as well.
No, not all stars are the same size. Stars come in a range of sizes, from small dwarf stars like red dwarfs to massive giants like supergiants. A star's size is determined by its mass and life stage in the process of stellar evolution.
No, the part of this theoretical planet in perpetual night time will gradually scan around all of the background stars once, during one of the planets orbit of the central star.
Yes we do, we all see the same star every night. But if you are in a certain spot you can see the constellations. Not all can see the constellations. If you can you are very lucky.
No because not everyone is in the same place and not all the star and constellation move. The Stars stay in the same spot. The only way it would move is if you move.
No. They come in all shapes and sizes. Colors too! It all depends on how much matter the star takes in during its formation.
No. All the stars you see at night are in our galaxy. Stars in other galaxies are much too far away to be seen without a powerful telescope.