A Tweet In Time Astronaut Chris Hadfield tweeted this photo, of the Richat Structure of Mauritania, from space. And he’s right when he tweeted it’s “[u]ndoubtedly one of the coolest space sights on Earth.” Chris Hadfield

hadfieldteaser

 

Source: Popsci

RELATED ARTICLE:   NEW EXHIBIT USES AUGMENTED REALITY TO SEND YOU TO MARS