Just make it up Trevor LOL!
Trevor - Hey have I showed you mars thru my scope yet
Friend - No
Trevor - Wanna see it?
Friend - No
Trevor - Of course you do, come and look
Friend - OK
Trevor - Can you see it
Friend - WOW, you really can see it!!
Trevor - Yep, cool huh!
Friend - How far away is it?
Trevor - oh about a trillion zillion kilometres
Friend - Really! What else can we see
Trevor - How about the Zwaggle Galaxy
Friend - Hey yeah! Show me that one
Trevor moves scope onto Omega Centauri
Friend - WOW and WOW! How far is that one?
Trevor - About 20 tri-billion million light years
Friend - WOW! Why is it so bright
Trevor - Coz each star is 50 billion times the size of our whole Solar System
Friend - Is that big?
Trevor - Of course it is!
Friend - Why are some of the stars a bit blue?
Trevor - Coz they are made of . . umm . . Ice.
Friend - Ice? but aren't stars hot?
Trevor - Oh, yeah, it's that hot 'Dry Ice'
Friend - WOW! Show me more
and on goes the episode as Trevor tries to explain why Galaxies have all the smoke in them (coz they are on fire) and why is the Southern Cross sitting side on (coz it fell over a few centuries ago).