Mercury is due to join Venus and Jupiter in the night sky for an uncommon celestial event commonly known as a planet parade.

February’s much-publicised six planet parade reaches its most accessible viewing window this weekend, offering skywatchers a brief chance to spot multiple worlds strung across the post-sunset sky.

Step outside just after sunset and you may catch an unusual sight: six planets strung across the sky in a gentle arc. The phenomenon—often dubbed a “planetary parade”—isn’t a cosmic spectacle in the ...