The planetary system TOI-201, located 370 light-years from Earth, exhibits a rare phenomenon: the orbits of its three planets ...

Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets tend to have more circular orbits. This split coincides with several other ...

To be a planet, NASA says an object must be big enough that its gravity has cleared away any other objects of a similar size ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery challenges long-standing ideas about how planets form and orbit in the cosmos.

New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests. The ...

The classical picture of star and planet formation suggests that a star’s rotational axis and the orbital planes of its planets should be aligned. However, exoplanetary systems have considerable ...

The early solar system may have been far more chaotic than we ever imagined. A new study published in Icarus suggests that ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." When you purchase through links on our site, we may earn an affiliate commission ...

Astronomers used machine learning to search old NASA data and uncovered more than 10,000 unknown planet candidates hidden ...