Neil deGrasse Tyson @neiltyson
@dirttrailhiker @PragmaticSloth Thanks, Micheal, for that backup. Another interesting fact — Earth days were shorter, billions of years ago. Moon tides have been slowing us down the whole time. So a more accurate count is closer to two-trillion. But I felt the precision would distract from the tone. — PolitiTweet.org
