Something incredibly strange is unfolding in our cosmic neighborhood, a powerful and unexplained gravitational force is ...

There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but ...

What if Earth sat at the center of the solar system? Imagine a universe rearranged with our planet as the gravitational hub.

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered that aging stars in their so-called ...

A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than ...

As telescopes have become more powerful, it’s turned out our solar system is not the only game in town: There are millions of ...

Water isn't just delivered to planets by comets and asteroids — it can also be forged as worlds form, a new study finds.

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...