The Challenge 2016 Mystery Message Contest received 147 entries by the end of the drive. The winner of the grand prize (a pair of Alaska Airlines tickets) was selected in a random drawing. Congratulations to Honolulu resident and HPR Sustaining Member Cheryl Squair.
The Mystery quote was by Stephen Hawking from a TED Talk in 2008:
I think it quite likely that we are the only civilization within several hundred light years; otherwise we would have heard radio waves. (time code: 9:17)
