Space is considered completely empty
but in reality it is not, some dark matter is present in very small amounts in space.
When astronauts on the International Space Station come out, this metal sticks on their clothes
The actual color of the Sun is white
but we see this saffron red or yellow from the earth, this is due to our atmosphere.
The number of stars in the universe is beyond our imagination, we will never be able to find out the number of stars present in the universe