Living being

ESA astronaut Alexander Gerst took this image circling Earth on the International Space Station during his six-month Blue Dot mission.

Alexander commented: "Sometimes it seems like our planet is a living being itself. If it were, what would it tell us?"

Read more about the Blue Dot mission at http://www.esa.int/Our_Activities/Human_Spaceflight/Blue_dot

Follow Alexander via alexandergerst.esa.int