The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

(CNN) — Astronomers have detected an exoplanet with a highly oblong orbit that experiences wild temperature swings — and it may be transitioning into another type of world. The exoplanet, named TIC ...

Astronomers are researching an Earth-like exoplanet that could contain water, according to NASA. The exoplanet, named ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

A study led by researchers from the European Space Agency has discovered a six-planet solar system about 100 light-years away from Earth. These planets, they say, have a "rhythmic beat" as the planets ...

Three celestial bodies are preparing to meet up for one night in September in a cosmic conjunction that should be widely visible in the sky.

The James Webb Space Telescope has detected a possible gas giant the size of Saturn in the stellar system nearest our own ...

New research using NASA's powerful JWST telescope has identified a planet 41 light years away which may have an atmosphere.

These six planets are in perfect sync with each other as they dance through space around their star. Credit: Roger Thibaut (NCCR PlanetS) Astronomers have observed a solar system where six planets are ...

That raises the possibility that the TRAPPIST-1e exoplanet could also have liquid water and therefore support life.

Nearby planets can affect how one planet 'wobbles' on its spin axis, which contributes to seasons. Mark Garlick/Science Photo Library via Getty Images Spring, summer, fall and winter – the seasons on ...