The closest exoplanets to the Solar System are around the red dwarf Proxima Centauri. This little star is orbiting two bigger ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

Alpha Centauri A, four light-years from Earth, may host a gas giant. If confirmed, no Earthlike planets orbit in the star’s habitable zone.

Astronomers using the James Webb Space Telescope (JWST) have found strong evidence for a new exoplanet — one orbiting Alpha ...

Researchers may have discovered a gas giant orbiting the star Alpha Centauri A, and it appears to be in the star's habitable ...

Astronomers have discovered a new world circling the outer edges of our solar system. So far, there are only four known ...

Astronomers have used NASA's James Webb Space Telescope to find strong evidence for a planet orbiting a star in the triple ...

Science Search for 'Planet Nine' Yields Unexpected Discovery Less than 1% of this dwarf planet candidate's orbit is close enough to detect, which means astronomers are lucky to have caught it at all.

Specific projections for confirmed dwarf planets are uncertain because confirmation requires detailed characterization (e.g., size, shape, and equilibrium state), but estimates for candidates are ...

We usually think of satellites as small objects orbiting planets or stars. But in the broader universe, galaxies themselves ...