Around the same time our ancestors left Africa, a dim red dwarf star came to within 0.8 light-years of our Sun, marking…

A first-of-its-kind space rock filled with pristine material from the formation of the Earth itself has returned to the…

A pair of new studies claim to have discovered two of the most distant objects ever seen in the outer reaches of the…

An international team of astronomers has identified a star that passed through the outer reaches of the Oort Cloud some…

A stellar orange dwarf has a 90% chance of passing through the outer reaches of our solar system no earlier than a…

The outer solar system has a new dwarf planet! Orbiting between 12 and 70 billion kilometers, 2012 VP₁₁₃ is joining…

Pluto is about forty times the distance from the Sun as Earth. But the Solar System is over 50000 times that length…

We might just be on the verge of discovering a real Planet X, according to astronomers John Matese and Dan Whitmire.…

Far away in the frozen outermost depths of our solar system, there might be a hidden planet four times the size of…

At the furthest edges of our solar system lies the vast Oort Cloud, a hypothetical giant shell full of billions of…

If you're wondering about the sunny view from the Oort Cloud, that vast sphere of debris that surrounds our solar…

Traveling to another Earth-like world just got a lot easier. It turns out that there may be many other dirt-and-water…