A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

If you're trying to get a beautiful look at the planets in our solar system, you're in luck. Between February 25 and February 28, all seven planets in our solar system will be visible in the night ...

A new member of the solar system has been detected, the second-largest of its kind, suggesting there may be more like it ...

Sky watchers may have a difficult time spotting the entire parade — all seven other planets in our solar system besides our own — without optical aid, said Ed Krupp, director of Griffith ...

The eight major planets of our Solar System orbit the Sun in the same flat ... On 28 February, though – weather permitting – all seven planets will be visible, a great spectacle for observers ...

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the ...

Now every other world in our solar system will be visible ... Mars SKY AT Viewed from above the solar system, the seven planets will fall within Earth’s line of sight at sunset, and will not ...

Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

Once they are all in place, seven of the eight planets in our solar system will grace our sky. For much of the week, six of the planets may be visible, according to NASA. On Friday, however ...

All of our solar system’s planets are lining up in the night sky at once this week. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a ...