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

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

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

Researchers found the object named 2017 OF201 while searching for "Planet Nine" - a hypothetical planet thought to exist ...

Scientists have identified an object about 700km wide inhabiting the frigid outer reaches of our solar system that might ...

might have found a new dwarf planet, potentially leading to more evidence of a theoretical super-planet. The scientists announced in a news release that they have found a trans-Neptune Object(TNO ...

which all orbit beyond Neptune. The organisation defines a planet and a dwarf planet differently. A planet must orbit its host star – in our case the Sun – and must be mostly round and ...

Giant planets are not rare per se — after all, we have four in our own solar system. Such large worlds are, however, rarely ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 ...

OF201 is incredibly lightweight on a cosmic scale. Scientists estimate its mass is about 20,000 times less than Earth’s and ...