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

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

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 ...

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 ...

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

The book presents a wide range of experiences and examines the various paths to estrangement, Ms. Smith said. “Families ...