International researchers warn that the planet Venus is concealing at least three city-killer asteroids that could strike ...

Scientists warn that over the next five billion years, there’s a tiny chance Earth could be flung from the solar system by a ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

A recent study has cast a concerning spotlight on a previously underestimated celestial threat: asteroids co-orbiting Venus.

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Tianwen 2 probe launched Thursday and will also get up close with a comet China’s National Space Agency today launched the ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

Twenty years ago, Congress gave NASA a directive: find 90% of the near-Earth asteroids that could potentially harm our little ...