What I have learnt?
- There are billions of comets orbiting the sun in the Kuiper Belt and even more in the Oort Belt.
- There are 3,520 known comets. I thought that there were less than 3,520 comets.
- Some comets are called sungrazers, they get so close that they crash to the sun or they brake up.
- There is a crater in Arizona, the Barringer Meteorite Crater that is 1 kilometre long.
- There are more than 50,000 meteorites have been found on Earth.
- 99.8 percent have been from asteroids, but the 0.2 percent of meteorites are from Mars and the moon.
- They are leftover rock from the early formation of the solar system.
- There are more than 150 asteroids are known to have a small partner moon.