How to safely watch a solar eclipse

Video: 00:01:34 [English]: A solar eclipse is an unforgettable sight, but only if you watch it safely! ESA reserve astronaut Sara García Alonso shows you how to enjoy this incredible cosmic event using certified eclipse glasses and explains why ordinary sunglasses are not enough. Learn what happens during the different stages of an eclipse, when it is safe to look up, and how to experience one of the greatest shows in the Solar System without risking your eyes.