Planets smaller than Neptune but larger than Earth, with atmospheres saturated with water vapor due to extreme temperatures, ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

The Cheops mission has located its first exoplanet, and this alien world is one of the hottest and most extreme planets ever found.

"The results provide a rare, detailed look at how planet-forming chemistry operates in the extreme environments around brown ...

NASA's planet-hunting satellite Transiting Exoplanet Survey Satellite has discovered more about one of the most extreme planets ever detected, KELT-9 b.

Planets like WASP-189b are called “ultra-hot Jupiters”. Iron melts at such a high temperature, and even becomes gaseous. This object is one of the most extreme planets we know so far,” says ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in our solar system.

Signs of an extreme planet found in another galaxy An odd x-ray signal hints that a Saturn-size world could be the first known planet lurking in the Whirlpool Galaxy 28 million light-years away.

As the hunt for planets outside our own solar system continues, we have discovered many worlds with extreme features. And the ongoing exploration of our own solar system has revealed some pretty weird ...

Needless to say, the surface temperatures of hot Jupiters are extreme, hence the name. And to make things even more interesting, these planets are tidally locked; they all feature a daylight side ...

An international team analyzed the atmosphere of one of the most extreme known planets in great detail. The results from this hot, Jupiter-like planet that was first characterized with the help of ...