The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...

Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course. Even if ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

Pluto was once the ninth planet of our solar system, until scientists reclassified it in 2006, sparking outrage and debate.

February 18th has been a significant date throughout history, marking a variety of events that have shaped the world. In a ...

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

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Tombaugh's photos that led to the discovery of Planet X. Pluto never really fit in with the other planets in the solar system. Its orbit was out of plane with the other planets. From 1979 to 1999 ...

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

This provides another piece of the puzzle to understand how planets and ... Pluto-Charon Formation Scenario ... a clearer picture of how the outer solar system formed and evolved based on analyses ...