There are currently no other explanations for the effects that we see, nor for the myriad other P9-induced effects we see on ...

Early observations of the planets revealed worlds far different from Earth, demonstrating that the universe was far more ...

“Objects bound to the sun — denizens of our solar system — take paths around it that return to the same point,” Kareta wrote in an email. “The Earth’s orbit is mostly circular, Pluto’s orbit is a ...

Choose from 393 Solar System Diagram stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else.

Astronomers find a Pluto-like planet that could change what we know about the solar system ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

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

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new dwarf planet.

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.

The Sweden Solar System is the largest scale model of the Solar System in existence, and it spans the entire Swedish territory. It was created by astronomers Nils Brenning and Gösta Gahm to help ...

For a time, Pluto sat on diagrams of the Solar System alongside actual planets like Jupiter and Earth. But before Pluto had even spent a plutonian year enjoying its planet status, it was ...

If a black hole did wander into our solar system, the largest effects would be gravitational. And those effects would depend on the mass of the black hole.