Some of the Largest Known Stars Compared to a Tennis Ball-Sized Earth October 29, 2018 If The Earth were shrunk down to the size of a tennis ball, how big would the universe be? Wren of the Corridor Crew is here to show you....
Smarter Every Day Got Amazing Footage of the ISS Transiting the Moon During the Eclipse August 25, 2017 Destin of Smarter Every Day, along with his friends Trevor Mahlmann and Matt Whitman were granted access to an open field on a Native...
Carl Sagan Explains How Eratosthenes Knew the Earth Was Curved Over 2,200 Years Ago March 2, 2017 In this excerpt from episode 1 of Carl Sagan’s ‘Cosmos’, he explains how the Greek scholar, Eratosthenes, knew the Earth...
