By Tommy Ward
There are 8 planets in the solar system ,but there used to be 9 .The reason why is because one of the the planets was to small so people now don't consider it a planet. The smallest planet in the solar system is Mercury, and the biggest is Jupiter. The closet planet to the sun is mercury.The farthest planet from the is Neptune . One surprising thing is that Mercury isn't the hottest planet Venus is, and Neptune is the coldest planet.Mercury, Venus, Earth, and Mars are the inner planets. The outer planets are Jupiter, Saturn, Uranus, and Neptune.
There are around 200 billion stars in the Milky Way. There is only 2,500 stars visibile to the naked eye. Sirius is the brightest star in the night sky. A star is a huge ball of gas held together by gravity. The core of the star is extremely hot, and produces energy. The energy is relesad as visible light which makes it glow.
Do you ever wonder what we live on. If you gussed the Earth you are correct. The Earth is one of the planets in the solar system , and we live on it. It is 149,600,000 km from the sun, and its diameter is 12,756.3 km . The Earths mass is 5.972e24 kg. The Earth is divided into seven layers they are the crust, upper mantle , transition region , lower mantle, d layer, outer core, and inner core. It is the densest major body in the solar system. Unlike other planets the Earth only has one moon. One cool fact is that Earth is the only planet whose english name does not derive from Greek/Roman mythology.
Exploring Our Solar System: Planets and Space for Kids - FreeSchool