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 ...

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

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

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

A potential new dwarf planet is identified ... a hypothetical planet larger than Earth that is thought to orbit beyond Neptune, is still on. Read the full story here. The wife and five children ...

A dwarf planet is classified as a celestial body that ... are still distant enough that they don’t strongly interact with Neptune. “This one, unfortunately, does not fall into that category ...

How can fission-powered propulsion help advance deep space exploration, specifically to the outer planets like Jupiter, ...

Dozens of NASA's missions to explore the cosmos could be in jeopardy under a budget proposal from the Trump administration.