What is the difference between a planetary system and a star system?

A planetary system refers to a star with planets and other celestial bodies orbiting around it. Our own solar system is a planetary system, with the Sun at the center, and eight planets orbiting around it. A star system, on the other hand, refers to a group of stars that are gravitationally bound to each other, with no planets orbiting around them.

While a planetary system revolves around a single star, a star system consists of multiple stars that are in orbit around each other. A star system can have two or more stars, and is sometimes referred to as a multiple star system or a binary star system. These stars can orbit each other at varying distances and can have complex and fascinating interactions with one another.

In summary, the main difference between a planetary system and a star system is that a planetary system consists of a star and its orbiting planets, while a star system is made up of two or more stars that are gravitationally bound together, with no planets orbiting around them.

A star system is a group of stars that orbit each other, while a planetary system is a group of planets that orbit a star. The term "solar system" is often used interchangeably with "planetary system," but technically refers specifically to our own system of planets orbiting the Sun.

Stars are formed from clouds of gas and dust that collapse under their own gravity. As the cloud collapses, it heats up and eventually ignites nuclear fusion in its core. This fusion reaction releases enormous amounts of energy, which makes the star shine.

Planets are formed from the same clouds of gas and dust that form stars. However, planets are much smaller than stars and do not have enough mass to ignite nuclear fusion. As a result, planets do not produce their own light. Instead, they reflect the light of the star they orbit.

Our solar system contains eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. We have also discovered thousands of exoplanets, which are planets that orbit stars other than the Sun. Exoplanets can be found in a variety of star systems, including binary star systems, triple star systems, and even quadruple star systems.

The study of star systems and planetary systems is an important part of astronomy. By studying these systems, we can learn more about the formation and evolution of stars and planets. We can also learn more about the possibility of life beyond Earth.