I've been asked about the red colour of the lunar surface in #ChangE4 pics (left). I don't think this is real. A little colour-balancing sorts it out (right), and the spacecraft still looks OK. Raw pic via https://t.co/UG6oFwHkJh pic.twitter.com/DkaOIDB9q6

— David Rothery 🇪🇺 💙 (@daverothery) January 4, 2019