This astronomy document has the purpose of teaching the student about basic astronomy, with this document we hope that the student can : ● Understand the solar system (its planets, characteristics among others) ● Planet Earth ● Galileo Galilei and how he helped advance astronomy Between more things...There are 7 pages, that are explained in the simplest way.At the end of this document there is a section with two basic questions about what was learned by reading the document, to reinforce