The below is an off-site archive of all tweets posted by @kemmott ever

January 27th, 2016

gmusser An underground nuclear test in 1957 inadvertently launched a manhole cover at six times Earth’s escape velocity. quora.com/What-is-the-fa…

via TweetDeck (retweeted on 11:54 PM, Jan 27th, 2016 via Tweetbot for iΟS)