Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have ...

For the unversed, "Planet Nine" is a hypothetical planet which is reportedly larger than Earth that is thought to orbit ...

As a result of the International Astronomical Union’s 2006 demotion of Pluto from planet to dwarf planet, our solar system ...

A recently discovered celestial body is rewriting our knowledge of the Kuiper Belt and maybe challenging the existence of the ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

The first observations of Pluto by NASA's James Webb Space Telescope (JWST) reveal dramatic phenomena on its surface, like ...

The universe is a complete unknown to humans. We are not yet able to control and understand the system in which Earth is located, as evidenced by the possible discovery made by a g ...

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

Plus, an in-depth look at how the West Texas city of Seminole reacted when a measles outbreak tore through the region.

The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar ...

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets.