The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Although Seeing in the Dark doesn't directly discuss Pluto, it does celebrate the joy of observing planets. Viewers who watch the show may wonder what happened to Pluto in 2006 and whether any of ...

As such, the planets of your friends in order from closest to furthest are as follows: Sadly, there is no love for Pluto in ...

Skywatchers: A six-planet alignment peaks this week as Mars, Jupiter, Uranus, Neptune, Venus, and Saturn come together for view shortly after sunset in the sky.

For most of January, four of the eight planets in our solar system (sorry, Pluto) will be visible if the sky is clear enough at night, IFLScience reports. Well, five if you're one of the astronauts ...

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

it does not dominate its own orbit like the actual planets do. Pluto has not tidied up enough of its orbit of other space rocks in order to qualify as a planet, sharing its orbit with other large ...

Pluto was famously demoted from a full planet to a dwarf planet in 2006. The International Astronomical Union handles the official naming and classification of planets and other celestial bodies.