Notes

hi goodmorning everyone, i'm Hanna Rivera from section 7-Masinop, so our topic for today is about Solar System, so what exactly is the Solar System?, and why is it called Solar System?

Why is it Called the Solar System?
There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is called “the solar system” because we use the word “solar” to describe things related to our star, after the Latin word for Sun, "solis."

In our solar System there are 8 planets
The planets are, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, so why didn't I include the planet pluto?
Because Pluto is now classified as a dwarf planet because, while it is large enough to have become spherical, it is not big enough to exert its orbital dominance and clear the neighborhood surrounding its orbit.

And did you know he Solar System was formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. Over time, the cloud formed the Sun and a protoplanetary disk that gradually coalesced to form planets and other objects. That is the reason why all eight planets have an orbit that lies near the same plane. In the present day, 99.86% of the Solar System's mass is in the Sun and most of the remaining mass is contained in the planet Jupiter. Six planets, the six largest possible dwarf planets and many other bodies have natural satellites or moons orbiting around them. All giant planets and a few smaller bodies are encircled by planetary rings, composed of ice, dust and sometimes moonlets.