No one knows for sure. No one has a telescope powerful enough to see every star in the universe
The sun is the only star in the solar system. Stars are extremely conspicuous, and if there was another star in our own solar system, we would notice it.
First of all, Jupiter is not a star. It would have to be if it and all its satellites were to be a solar system. Secondly, it itself orbits a star, our sun, so it is in a solar system.
Not part of our Solar system - but it is believed to be orbiting a star similar to our own.
We strongly suspect that every other solar system will be different, probably RADICALLY different, from our own. Every star is a little different; the mass that coalesced to form the solar system is different, and the unimaginably random factors that caused each solar system to form as it did - those are also different.
part of, but not its own
After our own Sun, the closest star is called Proxima Centauri.
A group of planets moving around a star is called a solar system. Planets outside our solar system are called exoplanets. Despite the difficulty of detection, many hundreds have been discovered recently, orbiting other stars.
No, none of them do. Planets revolve around stars, so all of the planets in our solar system orbit the Sun, our own star.
A group of planets revolving around a star is called a solar system. Each planet orbits the star in the center of the system and together they form a celestial family held together by gravity. The most well-known solar system is our own, which consists of eight planets orbiting the Sun.
Which Sun? The star Sol, in our own solar system, is in one of the spirals.
The Sun's own magnetic field - the star is the largest and most active component of the system.
No, the "Milky Way" is the name of our galaxy. Our sun is but a single, solitary star among some two hundred billion or more stars, many of which have their own planets. At last count we know of roughly 300 solar systems besides our own. Our solar system is called simply "Solar system," as our beloved star is called "Sol."