published on: 2015-09-04 04:24:19
What’s Up for September?
Stuff Mom Never Told You
munan15: The best Scottish photograph of 2014 - crescent moon
keroiam: Monterey, California
scishow: Has Stephen Hawking Solved a Black Hole Paradox?Stephen
stuffmomnevertoldyou: Thanks, Bob. (pbsparents)