MOON: It is the only natural satellite of the Earth and the only body in the solar system that we can observe in detail with the naked eye or with simple tools. FULL MOON: During this phase of the moon it is entirely illuminated and visible from the Earth. The Moon is opposite the Sun in this… Sigue leyendo GLOSSARY

Google Ngram Viewer

I looked on Google Books Ngram Viewer and I have searched three words related to my topic: moon, investigation and solutions. In this graphic, we can see that there are a lot of books that contain those words since 1800. The difference between those words is that moon has been said more in 1800… Sigue leyendo Google Ngram Viewer