Far beyond Neptune, at the far outer rim of our Solar System, astronomers have spotted what looks like a hidden “structure” ...

The discovery could allow us to better understand how Neptune migrated from the inner solar system to its current location ...

Researchers say the finding may also shed light on how giant planets gradually shifted to their current orbits and what interstellar conditions the solar system faced during its birth.

Astronomers have discovered a new, previously unnoticed concentration of icy bodies in the Kuiper Belt, dubbed the 'inner ...

"Similar to the asteroid belt, the Kuiper Belt is a region of leftovers from the solar system's early history. Like the ...

A newly discovered cluster of objects called the “inner kernel” of the Kuiper belt could teach us about the early history of ...

Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a ...

Our solar system may be small in relation to the universe, but amazingly it's still yielding new discoveries. Scientists have discovered three new moons – two orbiting Neptune and one orbiting Uranus.

Voyager 1 and 2 traveled billions of miles to reach the heliopause, showing how the Sun's magnetic influence marks the ...

For years, astronomers have teased the concept of another world in our solar system, commonly referred to as Planet Nine. But there could be a whole other 'Earth-like' planet waiting to be discovered ...