Facts are statements that can be checked on or proved. You can ask someone, you can look it up in a book or on the Internet, or you can examine objects. Maybe you can even actually see or do what you want to check out.
Opinions tell how someone feels about a fact or something they believe is a proven truth.
Opinions say that someone is angry or happy. Opinions may say that something is good or bad. When you are reading, you need to know the difference between facts and opinions. Below is a list of facts and of opinions. NASA's films of the Moon are poorly done.