Planet-watchers, mark your calendars for April Fool’s Day, 2026. That’s when the next known case of a rare celestial alignment in an alien solar system is due. The event involves two planets overlapping as they cross their star – and has only ever been seen once before.
https://www.newscientist.com/article/dn25332-rare-exoplanet-alignment-set-for-april-fools-day-2026/
https://www.newscientist.com/article/dn25332-rare-exoplanet-alignment-set-for-april-fools-day-2026/

Rare exoplanet alignment set for April Fool's Day 2026
Video: Exoplanets overlap as they cross their star Planet-watchers, mark your calendars for April Fool's Day, 2026. That's when the next known case of a rare celestial alignment in an alien solar system is due. The event involves two planets overlapping as they cross their star – and has only ever been seen once before. …