Astronomers using the James Webb Space Telescope have directly detected the faint glow of a planet that’s colder than any ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

At a frigid -125 degrees Fahrenheit (-87 degrees Celsius), WD 1856+534 b is the coldest planet ever directly observed, ...

An exoplanet discovered in 2020 contains the coldest temperatures ever measured on a planetary body, according to scientists.

In 2020, astronomers detected WD 1856+534 b, a gas giant that orbits a star 81 light-years from Earth. This exoplanet, which ...

Using the James Webb Space Telescope (JWST), scientists have found the coldest exoplanet that is orbiting a dead star, also ...

For years, astronomers have been searching for a ninth planet in our solar system (after giving Pluto the old heave-ho and demoting it to a dwarf planet) and now researchers say they’ve found a ...

They believe that Vesta was on its way to becoming a planet and that the Solar System's rocky planets likely began as protoplanets just like it. But new research is casting doubt on that conclusion.

"It's a rare opportunity to place our own solar system in a broader galactic context ... 87 degrees Celsius), WD 1856+534 b is the coldest planet ever directly observed, surpassing the previous ...

There have been questions about a mysterious ninth planet in our solar system for nearly a decade. Pluto was unseated as number nine in 2006. Now, a group of international researchers say they may ...