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

Following the announcement of a new “Hot Saturn ... the 10th confirmed planet TESS has discovered, but it’s the first one that is likely close to Earth in overall size.

Astronomers have discovered an exoplanet ... TOI-1453 b is a rocky planet orbiting close to its star, while TOI-1453 c is twice Earth’s size and may have a... Astronomers have uncovered extreme ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

Astronomers believe that Planet Nine could be 5-7 times the size of Earth and situated more than 200 times farther from the sun than our planet. It is believed to orbit the Sun in 10,000 to 20,000 ...

Despite the deep ocean floor coating some 66% of our planet's surface, we haven't explored 99.999% of it, study finds.

Scientists at Cambridge University's Institute of Astronomy have discovered a distant planet known as K2-18b. Preliminary evidence suggests t ...