I remember seeing a children’s animated movie in the 90’s. It was probably around 1996 or 1997 when I saw it. All I remember is that there was a redheaded little boy (could have been blonde) and the scene showed the boy sitting on a planet and you could see the whole planet under him. I also remember him and a man searching through the desert for water and they saw a mirage and ran toward it thinking there was water. This movie was in color and in English.