Mercury scooted across the sun’s face for the last time until 2032, spending about 5.5 hours crossing in front of the sun. Skywatchers across the Americas, Africa and Europe could see at least part of Mercury’s journey, but only with telescopes or high-power binoculars equipped with protective solar filters. Meanwhile, NASA’s Solar Dynamics Observatory provided views of from space. Transits of Mercury are rare, with about 13 happening every century. The last Mercury transit was in 2016 and the next one will be in 2032. Skywatchers in the U.S. won’t get another Mercury transit view until 2049.