THEN I thought "WHAT WOULD 200 BILLION PING PONG BALLS LOOK LIKE"
Then I took another hit off the bong. JUST KIDDING. It's actually fairly easy to figure out. The volume of a ping pong ball, according to this dork at Physics Forums, is 0.0000335m^3. That times 200 billion is 6,700,000. So 200 billion ping pong balls take up 6.7 million cubic meters.
Still can't picture that? I couldn't either. So I plopped them down onto Civic Center plaza.
ANSWER: About 582 feet. Roughly the height of the Chevron tower at 575 Market. You know the one.
|Pic stolen from the charmingly named "Skyscrapers of World."|
CONCLUSION: There are a lot of stars in the Milky Way.
This has been fun! Next time, we'll do evolution or something.