(FILES) Eclipse viewing glasses certified with the ISO 12312-2:2015 international safety standard which specifies requirements for direct observation of the sun, are displayed at Astromo, a space enthusiasts online store, in Palma de Mallorca on June 25, 2026. Day will briefly turn into night across a swathe of northern Spain on August 12, when the Moon will completely cover the Sun during a rare total solar eclipse. Here is what you need to know about the total eclipse, which is the first visible in mainland Europe since 2006. (Photo by Jaime REINA / AFP via Getty Images)