Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

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

Thanks to JWST, we've learned key details about methanol — a key building block for organic compounds necessary for life — on ...

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

Vesta, thought to be the second-largest asteroid in the solar system, could be a piece of an ancient, unknown planet, a new study hints.

The James Webb Space Telescope has investigated an exoplanet that’s super cool — literally. The huge planet, which is six times the mass of Jupiter, is the coldest exoplanet ever detected, with an ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

SETI’s senior astronomer explains how colossal artifacts could be the key to finding extraterrestrial life, past or present.

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

An international team used 40 years' worth of data from two space probes to track down what they believe are signs of this ...