Scientists say a new planetarium show about the Milky Way has helped them unlock one of the solar system’s many secrets.

A sweeping new ICE operation shows how Donald Trump’s focus on immigration is reshaping federal law enforcement.

Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing ...

The discovery also challenges many scientists' notion of the outer solar system. The area beyond the ... NASA's New Horizons probe, which snapped pictures of Pluto and its moons in 2015, has ...

The new object is one of the most distant visible objects in our solar system. Astronomers have indeed discovered a potential new dwarf planet in the outer reaches of our solar system, far beyond ...

A newly detected planet beyond Pluto is not just expanding our understanding of the Solar System, it might be quietly rewriting it. Astronomers from the University of Taiwan recen ...

The discovery of 2017 OF201 is significant, as it challenges the hypothesis of Planet Nine, a hypothetical planet thought to exist in the outer Solar System.

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

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

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

The new object, named 2017 OF201, was discovered by researchers in an ... hypothesis that there's a "Planet X" or "Planet Nine" beyond Pluto, with gravity affecting dwarf planets and other objects ...