Countdown to #MissionProxima with @Thom_astro https://t.co/H1dznu7D1n #AskThomAstro https://t.co/wSmBH1dZ51
— ESA (@esa) October 7, 2016
Countdown to #MissionProxima with @Thom_astro https://t.co/H1dznu7D1n #AskThomAstro https://t.co/wSmBH1dZ51
— ESA (@esa) October 7, 2016