Objects with orbits like Ammonite’s “are challenging to observe, and thus their detections are still rare, yet they play a crucial role in constraining models of solar system formation,” the ...

Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are these planets, and how do they travel through space? Uncover the true ...

Witnessing the dawn of a new solar system. Credit: ESO Beyond the specifics of HOPS-315, the result boosts confidence that rocky planets are common. If condensation begins so early, many stars may ...

The Subaru Telescope has made an exciting discovery: a small body beyond Pluto, with implications for the formation, evolution, and current structure of the outer solar system.

The bold question-askers at What If explore why having a black hole in our Solar System would be a catastrophic scenario.

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

The White House bid to terminate NASA’s fantastical flights of exploration “across the solar system” threatens to decimate American leadership in space discoveries.

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar system. Now, a team of researchers have taken a completely different ...

After 130 days spent fighting the federal government, Elon Musk turned up with a black eye at the White House on Friday for his last day as a “special government employee.” ...

And way off in the Kuiper Belt, a doughnut-shaped ring of ice and rock circling around the solar system orbits the demoted dwarf planet Pluto, formerly the ninth planet.

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun as the orbit of Mars.