Space

Space is a much bigger place than our imaginations can see. Since space is big, We have different units of measurement. One of the most used ones is a Light year. One light year is how far light can travel in one year (5.879e+12 Miles) (9.461e+12 kilometers). There are also planets, planets are a body of rock and other things that clump together. These planets are round meaning they are a sphere. Then there is the classic star, A Star is not a star like you see in flags or this ⭐. A star is a hot sphere of plasma. If you want to learn about plasma go to the “States of matter” Section. Anyway, These stars can burn you into nothing. The surface of our star, The sun, The average temp of the surface is 10,000 Fahrenheit (5,600 Celsius). Then there are galaxies, These things are massive. Our galaxy (The Milky way) is about 100,000 Light years across Or 600,000 trillion miles (950,000 trillion km) . They have billions of stars and many many planets.

Solar system

The solar system is where earth is, In the center there is the sun. 8 planets are currently orbiting the sun. The planets are Mercury, Venus, Earth, Mars, Juipiter, Saturn, Uranus, And Neptune.

In the middle of Mars and juipiter, There is the asteroid belt. The asteroid belt is a lot of asteroids that orbit the sun in that area. In the asteroid belt there is a dwarf planet called ceres. A dwarf planet is like a planet but not big enough or other reasons are: It hasn’t cleared it’s area of asteroids,and it did not meet the three criteria the IAU uses to define a full-sized planet. What is an asteroid? An asteroid is a peice of rock that is in space. Some people call asteroids “Meteors” asteroids Rarely effect humans. The most recent one was back in 2013 where an asteroid about 20 meters wide but weighed the same as the Eiffel Tower. It was above the city of chelyabinsk when it blew up in the atmosphere and made a shock wave that shattered windows.

In most outer part of the solar system, There is a thing called the kuiper belt. It is like the asteroid belt, But it is in a different place. Also it is larger and has more asteroids. There is a sattelite that has traveled through the kuiper belt. Voyager 1 went through it 2012.

Mercury is a small planet, it is almost the size of the moon. On most rock planets there are big craters. A crater is a big hole formed by an asteroid smashing into that area. A rocky planet is a planet formed by a rocks clumping together. some rocky planets are: Mercury, Venus, Earth, and Mars. Mercury is the closest planet to the sun. Dispite being closest to hottest thing in our solar system, it is not the hottest planet. The hottest planet is Venus. The average surface temp is 870 Fahrenheit (465 Celsius) Venus is full of volcanos . The 3rd planet from the sun is the Earth. That’s you, That’s where humans are. Earth is the only planet we know of that has life. It is cold in north and south and warm at equator. next is Mars, Mars will probably be the first planet that us humans colinize. Is is mostly dust except the poles which are ice. Some scienctists say that it might have had water some time.