Unformatted text preview: How big is the Sun compared to 1 AU? So if the Sun were a ping-pong ball, where might Earth have to be? Several feet away at least. How big would the Solar System have to be? It's more like 30-40 AU so no way even the Solar System would fit inside the room. Suppose the answer were Grain of Sand: How far would Earth be from the Grain-of-Sand Sun? several inches at least -- remember the Sun is much smaller than 1 AU. How big would the Solar System have to be? A few feet rougly. How big is the Solar System compared to 1 ly or 100,000 ly? It's much much smaller. So while the Solar System would fit inside the classroom, the rest of the MW would not. So the answer must be Atom. Clicker Question #3: Problem #2 on Prather et al. 124. D. AAAAA....
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- Fall '08