What on Earth has happened here?

On our first day back to school we were absolutely amazed to find a space craft had crashed into our outside area! There was green slime all over the playground, nuts and bolts scattered, and PANTS hanging from the tree.

We went to investigate the evidence and found a letter that had been written by an alien! 

What a shocking start to the term... hopefully if we learn enough about Space and the planets, the alien will find his way back home again!