If we didn’t have the Moon, the Earth would tilt forward and back and that could start an ice age or it would be too hot to live on. If you want more information click on this link. If we didn’t have the Moon it would take one thousand days for a year. Also the Moon is a quarter of the size of the Earth.
How old are the Sun, Moon and the Earth? The Earth is 4.543 billion years old and the Sun is 4.603 billion years old and the Moon is 4.53 billion year old. If you want information click this link .
The Solar System
There are five dwarf planets in the Solar System and they are called Pluto, Ceres, Eris, Makemake and Haumea. Also, for thousands of years, humans have thought the planet Earth is in the middle of the Universe. This where we got the information from.