No Planet B

ESA astronaut Alexander Gerst took this image of Earth from the International Space Station during his Horizons mission. He posted it with the caption: "Everything’s at stake now. As 20 000 experts from 90 countries gather in Katowice for the world’s biggest climate forum COP24, it's up to all of us to remember there is No Planet B." referring to the United Nation's Climate Change Conference held in Katowice, Poland, on 4 December 2018.

Follow Alexander and the Horizons mission on social media on his website and on his blog.