Planets is the natural satellite of some accountable size orbiting the star.
Its in Planet Science
Learn the planets and the moons of the planets and the order of planets from the sun down and what the climate of the planets are
Astronomy.
I am not entirely sure what you mean by space lines, but if you mean, spaceships that make regular trips to other planets, the way that ocean liners travel to other continents, then yes, they are science fictional.
No body truly knows all the planets in the universe but ask a science teacher or a student that studies planetary science.
Basic science is simply science that is easy and uncomplicated. An example of this can be the names of the planets.
Something like planets or germs or a scientist do something you like about science!
The science of studying the Universe and it's workings is known as Astrophysics. I'm not exactly sure what you mean by "physical" science but there is a wide variety of different scientific disciplines involved in Astrophysics.
In Planetary Science the two largest planets are Jupiter and Saturn.
astrology
Astronomy
Astronomy.