Hygiene Elementary students on Wednesday watched as Principal Renee Collier and teacher Maridee Moll, after lots of drum rolls, popped open a Pluto-themed time capsule that was sealed in 2016 as part ...

"I'm just at a place where I'm in my own space and lane. I'm not in competition. I don't have to be racing for any type of thing." ...

In 2006, Pluto was reclassified as a dwarf planet by the International Astronomical Union (IAU).

But Charon was half the size of Pluto itself, so big that the Pluto-Charon combination are sometimes referred to as a double planet, according to NASA.

Pluto was reclassified from a planet to a dwarf planet by the International Astronomical Union because it did not meet all three criteria of their updated definition of a planet.

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to the bottom of whether Pluto is a planet, I tracked down planetary ...

Named for the maiden-snatching, shadow-dwelling god of the underworld, the small but mighty planet Pluto is associated with sex, death, destruction, subversion, the taboo, and the subconscious.

The official definition of a planet, which famously saw Pluto demoted to dwarf planet status in 2006, doesn't really work for worlds outside of our solar system. Now there is a fix – but Pluto ...

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.