Our solar system consists of the Sun, eight planets, the Asteroid belt, and the Kuiper belt. Pluto didn’t meet the proper requirements to be classified as a planet and is no longer considered to be an actual planet. Planets as small as Pluto, are now known as Dwarf planets. There are 5 Dwarf planets. The four inner planets are called terrestrial planets and the four outer planets are called gas giants.
The Sun is by far the largest object in our Solar System. It holds 99.8 % of the entire mass of our Solar System. The Sun is an ordinary Star. Is classified as a normal main-sequence G2 Star. Composed of 70 % Hydrogen and 28 % Helium with eight planets and many smaller objects orbiting it.
Mercury is the closest planet to the Sun. Mercury has an extremely thin atmosphere. It has a lot of atoms flying off it’s surface by the Solar Wind. Has no Moon and has been visited by two space-crafts. Mercury has very weak magnetic field. It’s strength is about 1 % of Earth’s.
Venus is the second planet from the Sun, and the sixth largest. Venus is the most brightest object in the sky. It’s also called Earth’s sister planet, at times, due to the two planets close similarities. Venus does not have any Moons. It’s believed, that at one time Venus had liquid water on it’s surface. But all the water has now boiled away.
Earth is the only planet, whose name does not derive from Greek/Roman mythology. In the “ancient times” Earth was considered to be the center of the Universe. All these beliefs were brought to rest in the late sixteenth century by Copernicus. It was then proved, that Earth is a regular planet, orbiting a star.
Mars, also known as the “red planet”. Is the forth planet from the Sun. It’s also the seventh largest. Early in Mars history, it was very similar to Earth. The very first space-craft to visit Mars was Mariner 4. It sent back detailed pictures to NASA. The pictures confirmed that Mars doesn’t have any life on it. Evidence from the pictures that NASA received from their space-crafts, also shows that Mars could’ve had liquid water on it’s surface in the past.
Jupiter is the fifth planet from the Sun. It’s by far the largest planet in our Solar System. Jupiter is more than twice as massive as all the other planets in our Solar System combined.
The “great red spot” is a massive storm that’s been raging on Jupiter for more than 300 years, now. The storm is so huge, it can hold up to two Earth’s in it. Some scientists are starting to think that the great red spot might become a permanent feature of Jupiter.
Saturn is the sixth planet from the sun, and it’s the second largest. Saturn is the least dense of all the planets in our Solar System. Saturn has been visited by many space-crafts. The most fascinating feature of Saturn, is it’s rings. There are four main groups of rings and three fainter, narrower groups of rings. Saturn’s rings are very thin. The origin of Saturn’s rings is completely unknown.
Uranus is the seventh planet from the Sun, and it’s the third largest. The space-craft confirmed that Uranus does have 21 Moons. The wrong way to pronounce it is “your anus”, but proper way to pronounce it is “yoor a nus”.
The Asteroid belt is the region of the Solar System located between the orbits of Jupiter and Mars. Many irregular shaped bodies, known as asteroids, or minor planets. Reside within the Asteroid belt. The very first object of the Asteroid belt was discovered in 1801. Now known as Ceres.
The Kuiper belt is a disk-like shaped region beyond the orbit of Neptune. It’s about 30-50 AU from Sun. It’s very similar to the Asteroid belt. Being home to many small icy bodies, minor planets, and dwarf planets. The former planet, Pluto lies within the Kuiper belt.