Tell about our Solar System ?

The ancient Greeks named them planets, meaning "wanderers." Mercury, Venus, Mars, Jupiter and Saturn were known in antiquity, and the invention of the telescope added the Asteroid Belt,

The dawn of the space age saw dozens of probes launched to explore our system, an adventure that continues today. Only one spacecraft so far, Voyager 1, has crossed the threshold into interstellar space.

The Earth travels around the Sun in a loop that is shaped a bit like an oval. We call this the Earth’s orbit.

The discovery of Eris kicked off a rash of new discoveries of dwarf planets, and eventually led to the International Astronomical Union revising the definition of a "planet.

The Earth is always spinning around

The revision changed Pluto's status from planet to dwarf planet in 2006,

a decision that remains controversial – especially after the New Horizons mission found immense geological variety on the world in 2015. [Infographic: Structure of the Solar System]

Astronomers are now hunting for another planet in our solar system, a true ninth planet, after evidence of its existence was unveiled on Jan. 20, 2016.

sometimes from where you stand on the Earth you can see the Sun

The so-called "Planet Nine," as scientists are calling it, is about 10 times the mass of Earth and 5,000 times the mass of Pluto.

this is the daytime and sometimes the part of the Earth where you are is facing away from the Sun so it is dark this is the nightime.

Many scientists think our solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula.

As the nebula collapsed because of its gravity, it spun faster and flattened into a disk.

It takes 24 hours for the Earth to spin all the way around, and we call this a day.

As the nebula collapsed because of its gravity, it spun faster and flattened into a disk.

Find out more about night and day.

The sun is by far the largest object in our solar system, containing 99.8 percent of the solar system's mass.

The sun is by far the largest object in our solar system, containing 99.8 percent of the solar system's mass.

There are eight planets that orbit around the Sun.

In order, going from the closest planet to the Sun, to the one that is farthest away, they are

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Planets orbit the sun in oval-shaped paths called ellipses, with the sun slightly off-center of each ellipse.

Planets orbit the sun in oval-shaped paths called ellipses, with the sun slightly off-center of each ellipse.

All of the planets and the Sun are round, like balls.

There is a lot of difference between the planets.