A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

Billions of years ago, in the frozen edges of the solar system, a violent impact shaped one of space’s oddest pairs. Instead ...

Though they don't orbit around our sun, sub-Neptunes are the most common type of exoplanet, or planet outside our solar ...

Macduff met the Herald this week at the Jupiter basalt marker along the Columbia Park Trail, just east of the blue bridge. It ...

"If there were only one object, that would be interesting but an outlier. If there's two, we're pretty confident that's a ...

Frequently Asked Questions are divided into four topics. Click on the corresponding question to view the answers. Submit all other questions and comments using WEO Data Question Form ...

Cooper Flagg, the projected No. 1 pick in the 2025 NBA draft, and his exceptional play begs the question: To which NBA players -- both past and present -- does he best compare? ESPN talked to NBA ...

Since at least 2016, a rumor has circulated online that "a speck of dust is halfway between the size of" an atom and Earth. However, Wendy Taylor, a particle physicist and professor of physics ...

A speck of dust measures halfway between the size of an atom and Earth. Rating: Since at least 2016, a rumor has circulated online that "a speck of dust is halfway between the size of" an atom and ...

On Earth, DMS and DMDS are only produced by life, primarily microbial life such as marine phytoplankton. While an unknown chemical process may be the source of these molecules in K2-18b’s atmosphere, ...