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 ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

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

NASA has explored the space beyond Earth and our solar system with spacecraft like Voyagers 1 and 2, and how we’ve discovered ...

Therefore, this study holds the potential to use gas giant planets within our solar system as analogs for exoplanets throughout the cosmos. For the study, the researchers analyzed data collected from ...

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

The historic probes are the farthest human-made objects from Earth. Just how far they've gone will blow your mind.

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.

"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 ...