Every planet moves around the Sun at its own pace, from Mercury’s 88-day year to Neptune’s 165-year orbit. Orbital periods, ...

Star and planet formation has largely been considered separate, sequential processes. But in a new study, scientists at Southwest Research Institute (SwRI) have modeled a different scenario where ...

Large planets need metal-rich stars in order to form; small planets do not. Small planets have low eccentricities, and large planets have large eccentricities," Gilbert explained. The coincidence of ...

Right angle Illustration of 2M1510 showing the orbits of the two brown dwarfs (in blue) and that of the planet (in orange). (Courtesy: ESO/L Calçada) The first strong evidence for an exoplanet with an ...

A planet less than a million years old is still gathering gas and dust from the disk around its star, and astronomers have ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered ...

Artist’s concept depicting Elias 2-24 b, the youngest exoplanet detected to date, still growing within the disk of gas and ...

Astronomers found evidence that a giant stream of gas flowing into a young triple-star system may have tilted its planet-forming disk, offering a new explanation for why some planetary systems are ...