A comet born around a distant star is now tearing through our solar system at roughly 150,000 miles per hour, and astronomers ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

Our latest known interstellar visitor, comet 3I/ATLAS, is currently making its way out of the solar system, after passing by ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

Along with other recent discoveries, the new finding from Perseverance boosts the case that Mars once hosted conditions that ...

The planet should not have survived the star's red giant phase—which sees a star balloon to more than 100 times its original ...

A rocky cigar-shaped object detected in space last month came from another solar system, astronomers said Monday as they confirmed an unprecedented observation. The discovery may provide clues as to ...

As the United States prepares to celebrate its 250th anniversary, the history of the solar system tells its own story of ...

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...