Gas giants are massive worlds made mostly of hydrogen and helium. They lack solid surfaces, and in our solar system, Jupiter ...

Add Yahoo as a preferred source to see more of our stories on Google. Some exoplanets, like the one shown in this illustration, may have atmospheres that could make them potentially suitable for life.

The planets have been nicknamed Earth's seven sisters. — -- An international team of astronomers has discovered seven potentially habitable exoplanets — or planets outside our solar system — that ...

Astronomers have identified a frozen, Earth-sized world circling a nearby sunlike star, a find that sharpens the search for ...

A unique characteristic of the candidate planet HD 137010b is its ice-cold temperature.

A NASA mission has spotted an Earth-size exoplanet orbiting a small star about 100 light-years away. The planet, named TOI 700 e, is likely rocky and 95% the size of our world. The celestial body is ...

Astronomers have confirmed a giant planet orbiting a tightly bound pair of young stars, marking a first in direct exoplanet imaging. The planet, known as HD 143811 AB b, is the closest-in world ever ...

An "extra exceptional" Tatooine-like exoplanet, orbiting two suns, has been discovered. Astronomers say the "huge" new world is six times the size of Jupiter despite only forming 50 million years ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Morgan Underwood, Rice University (THE CONVERSATION) When astronomers search for ...