RT @RCdeWinter Physics lesson pic.twitter.com/d7HBUHc9RP via @andrew_thaler @cosmicpinot @LKrauss1 @irisherself
3:00 AM - 7 May 2014
1 reply
20 retweets
8 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.