Pluto retrograde will commence on May 2 and last until Oct. 11 Kelsie Gibson is the Senior News Editor of Society and Culture at PEOPLE. She has been working at PEOPLE since 2021. She was formerly at ...

Pluto, with its heart-shaped glacier, as captured by the New Horizons spacecraftJPL/NASA Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Five years ago today (Aug. 24), Pluto was demoted from full-fledged planet to a newly created ...