PM me for full answer, please. If it's not too late.
'Universe' means 'Everything'. That is, all matter, all space, all time.
You know I’m going to be honest I don’t feel like it
You can use mostly anything as long as it is circular. Depending on how big it is, you could use sturdy paper plates and use a stick/rod and tape to hold it together, or you could use bottle caps if the car you are trying to make is really small.
6.35x10^-4 OR 6.3x10-4 (if only one decimal number is allowed)
