Ripley's Believe It or Not by Ripley’s Believe It or Not! for July 31, 1999

  1. Missing large
    flavious  about 8 years ago

    The speed of light is 186,000 miles per SECOND, not per hour. They would have to be traveling at 18,600 miles per second or 66,960,000 miles an hour to reach Alpha Centari in 43 years.

     •  Reply
Sign in to comment

More From Ripley's Believe It or Not