This discovery marks the first known case of a compact planetary system with such a noticeable tilt between close planet ...

Astronomers using the European Space Agency's Cheops mission have caught an exoplanet that seems to be triggering flares of ...

But sometimes, their orbits display striking patterns. For example, astronomers studying six planets orbiting a star 100 light years away have just found that they orbit their star with an almost ...

In the remote outer reaches of planetary systems, far beyond the orbit of known planets, enormous and mysterious worlds silently loop around their stars. Some drift as far as 10,000 times the distance ...

Since the formation of the Solar System, the orbits of the planets have evolved and changed over time. While one of the most prominent ideas in the last few decades is planetary migrations and the ...

WASP-12b is a planet on a date with a fiery destiny, doomed to plunge into its sun-like star. Scientists may finally know why some hot Jupiters eventually death spiral into their stars.

These “hot Jupiters” often orbit closer to their star than Mercury does to the Sun. ... It concluded that the orbits of each planet will vary within or less than 1% over 100,000 years, ...

“The orbits of the planets today are the same as they were a billion years ago.” Researchers think that when planets first form, their orbits around a star are in sync.