Mark February 28 on your calendar. Skywatchers will have a rare chance to see six planets align in a stunning "planetary parade" this week. The best time to view the alignment is February 28, but ...

A rare alignment of two exoplanets with their star, marking one of the few known exosyzygies, an astronomical event involving celestial bodies outside our solar system, is expected to occur. Despite ...

A rare celestial occasion will light up the Saturday evening skyline across California and the rest of the nation, featuring a bright six-planet parade in a special planetary alignment visible to ...