The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, ...

Astronomers have catalogued more than five thousand planets orbiting distant stars, and a handful of them defy almost ...

AUSTIN (KXAN) — Space just got a lot more crowded: scientists said they’ve uncovered about 10,000 new exoplanet candidates hidden in NASA data. A new research paper published this month in the ...

The hunt for Planet Nine continues as new discoveries make the Solar System’s biggest mystery even harder to solve. Is there ...

This artistic impression shows the collision of two planetesimals in the young, evolving planetary system of Fomalhaut. NASA’s Hubble Space Telescope has captured the dramatic aftermath of two violent ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

Underneath her planetary plea is a desire for fairness. That core principle runs deep, evident in her request to include in ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...