The sun!!! Right!!! Now Blake remember what they were talking about! Surely he knew something about the sun. Anything besides it's hot ... but then the Professor posed a new question. Okay ... focusing his mind he dug deep into his 12 year old memory to think about what happens when the sun, moon, and earth all align.

He smiled remembering the last time it happened and the memory he had of his mom pulling him out of primary school to see it. "It makes an eclipse." Short and sweet and too the point.