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 ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

James Webb Space Telescope observations suggest Pluto’s atmosphere is unlike any other in the solar system, confirming a 2017 ...

As astronomers study an exoplanet called K2-18b, conflicting research reveals how difficult it is to find evidence of life ...

The discovery of the exoplanet, a super-Earth called Kepler-735c, is all down to something called transit timing variations, ...

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

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 ...

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

"Are we alone?" This ancient question has occupied humanity's mind for a long time. In 1995, the discovery of the first ...

The search for life beyond Earth is a key driver of modern astronomy and planetary science. The U.S. is building multiple ...

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