Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

Fastest Known Planetary System May Have Been Pushed by Our Galaxy’s Supermassive Black Hole ...

A new study suggests that the planet’s icy interior and liquid ocean could be insulated with a three-to-six-mile-thick layer ...

Billions of years ago, Earth was home to extreme environments, including intense UV radiation, frequent volcanic eruptions, ...

Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground observations and space ...

When you get out past the planets of our solar system and keep going, you will eventually enter the Kuiper belt, which has ...

The solar system has nine planets, but in 2006 the International Astronomical Union declared Pluto a dwarf planet, making the ...

The Subaru Telescope has discovered new objects beyond the known Kuiper Belt, suggesting a more complex structure at the edge ...

Avi Loeb's controversial claim that a recent fireball resulted from an interstellar object is taking a hammering.

Our universe is full of mysterious sights and sounds. Explore some of our most frightful finds from past Halloweens.

You may need binoculars or a telescope for this one. It includes the three furthest planets in our solar system.