WD 1856+534b—a freezing world with a surface temperature of -125 degrees Fahrenheit—exists where planets are normally scoured ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

So which planets in our solar system have rings? All four giant planets — Jupiter, Saturn, Uranus and Neptune — sport these ...

Indeed, other planets, dwarf planets and moons in our solar system ... far from the sun and very close to it at other times. For example, Mercury has an "eccentric" orbit, which contributes ...

Most astronomers agree that life is likely common throughout the universe. While Earth is the only world known to have life, ...

The image of Luke Skywalker gazing wistfully across the desert of Tatooine while a pair of “suns” set on the horizon is among of the most famous scenes in pop culture. When Star Wars debuted in 1977, ...

Comets that have hit Earth have been a mixed bag. Early in Earth's history, during the solar system's chaotic beginning, they ...

Astronomers using the James Webb Space Telescope confirmed that the planet K2-18b has traces of dimethyl sulfide, a potential ...

Astronomers have detected molecules on exoplanet K2-18b that may have been produced by simple organisms, claiming it's the strongest evidence yet of life off Earth.