Elongation is the angle, in degrees, between the Sun and the planet as seen from here on the Earth. Superior planets (those that lie further from the Sun than us: Mars, Jupiter, Saturn, Uranus, ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

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 ...

Thomas says this goes for all outer planets: Jupiter, Uranus, Neptune and Pluto. “Jupiter and Saturn are the only outer planets that the ancients were aware of in previous times,” explains Thomas.

The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The International Astronomical Union officially recognized 128 new moons orbiting ...

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper Belt, is helping scientists nail down their respective masses, a new study reports. The Kuiper ...

The solar system is also home to many other cosmic bodies including asteroids, moons and dwarf planets such as Pluto. What's this? Oh noooo… Stella: You should know where all the planets are ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper ... "Since Gonggong is similar in size to Sedna, we believe methane must have escaped from ...