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

In 1977, NASA launched Voyager 1 and 2 on a mission to explore the outer planets. Now, over 45 years later, these incredible ...

Our solar system resides in a unique low-density bubble called the Local Hot Bubble (LHB). Stretching at least 1,000 ...

A 3D map of our cosmic neighborhood has revealed hot and cold regions as well as an "escape tunnel" from our local bubble.

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 ...

Although there have been claims for other exomoons (moons beyond the Solar System), these are now under considerable question, so this is probably the strongest evidence we have for such a first.

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

Illustration showing communication between planets beyond our solar system looking from the perspective of Earth. New research using the Allen Telescope Array looked for this type of communication ...

"Solar System: Volcano Worlds." Right now, on "NOVA." ♪ ♪ NARRATOR: Humans have only set foot on one world beyond our own. On the moon, we found a barren landscape, appearing unchanged for ...