Science Olympiad Help Please? Best answer points by 8 pm today.?

So my son has been asked to compete in the 'Reach for the Stars' event tomorrow as a last minute fill in. This really isn't his area of expertise and he is trying to be a good sport and team member by filling in. Does anyone have a link to information he should take in with him? Can you give any suggestions for a 1 page reference with constellations, star charts, definitions and the like?

I know this is so last minute, and ridiculous when there are students who have studied for months for this event, I just don't want to see him punished for doing a good deed. Any help would be greatly appreciated.

I'm cross posting to increase responses. many thanks.