For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical ...

According to Dr. Grundy, Pluto is a planet. "I use the word 'planet' to refer to it, and most of the planetary science ...

Charon is the largest moon of the dwarf planet Pluto, but calling it a ... Christy and the Discovery of Charon, Pluto's Satellite', Journal of the Royal Astronomical Society of Canada, Vol 97 ...

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

A new study suggests that the origin of Pluto's largest moon was quite different than our own. Here's what you need to know.

A United Launch Alliance Atlas 5 rocket set the tiny probe on its nine-year journey to the icy dwarf planet. This mission marked the first time a spacecraft was sent to explore Pluto, providing ...

One idea is that Pluto got its moon system when a massive object smashed into the dwarf planet. The resulting debris then formed into the moons. This hypothesis was nicknamed the “Big Whack.” ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in February.

However, in 2006, the International Astronomical Union (IAU) redefined what constitutes a planet, leading to Pluto’s reclassification as a dwarf planet. This decision sparked widespread debate ...