27 GIU. 2014 Data di pubblicazione 5085 Visualizzazioni

A view of our planet from the International Space Station taken by ESA astronaut Alexander Gerst during his six-month Blue Dot mission in 2014.

Earth’s atmosphere is clearly visible as the thin blue line. Alexander wrote this caption for the image: “Look at how thin our atmosphere is. This is all there is between humankind and deadly space.”