Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of darkness; after all, Pluto is the Roman equivalent of the Greek God Hades.

Pluto, once considered the ninth planet of our solar system, has been a topic of intrigue since its reclassification as a dwarf planet. Recent observations suggest that its atmosphere is expanding, ...

Planetary scientist Kelsi Singer was an undergraduate in 2006 when a spunky spacecraft launched with an ambitious goal: to fly by Pluto. It would take nearly a decade for the New Horizons probe to ...