What If? 2

Trust me, I'm no scientist, and I understood just the tiniest bit of what I read in this book. But even if you are no scientist and you understand little of what you are reading, hey, it's fun. Really, really fun. People ask questions and Randall Munroe answers.

Sample question:
“If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?”

Answer: “If you drive at a steady 65 miles per hour, it will take you 480,000,000,000,000,000 years—that's r.8 x 10 to the 17th power—to get there, or 35 million times the current age of the universe...” And that's just the start.

See? Super fun.