Astronomers have long thought solar systems follow a simple pattern similar to our own: small, rocky worlds orbit close to ...

A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.

A distant star system with four super-sized gas giants has revealed a surprise. Thanks to JWST’s powerful vision, astronomers detected sulfur in their atmospheres — a chemical clue that they formed ...

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't ...

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

Six planets will line up in a rare "planetary parade" this month - but spotting them all won't be easy.

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.

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

The planets around a nearby star seem to be in the wrong order, hinting that they formed through a different mechanism than the familiar one by which most systems grow ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Astronomers say a newly discovered solar system about 116 light years from Earth is challenging long held ideas about how planets form.According to CNN, researchers using telescopes from NASA ...