Mirrors left by Apollo let us measure the Moon to millimetres — and they show it moving away by nearly four centimetres every year.
Imagery:
NASA/JPL-Caltech
ESO/S. Guisard (www.eso.org/~sguisard)
NASA's Goddard Space Flight Center Scientific Visualization Studio
ESO/B. Tafreshi (twanight.org)
#space #moon #earth #apollo #shorts
