Explore the unique gravitational challenges of planetary leaping.

"Consider a hypothetical solar system where all the planets reside within the star's habitable zone, potentially supporting ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

The James Webb Space Telescope spotted possible signatures for life in an exoplanet's atmosphere. Still, researchers caution ...

"This measurement of the planet population from planets somewhat larger than Earth all the way to the size of Jupiter and ...

About 5,800 planets beyond our solar system, called exoplanets, have been discovered since the 1990s. Of those, only four ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

Learn about the solar system from a pair ... you'll find a complete simulation of our Milky Way galaxy — 400 billion star systems, along with every known planet, moon, black hole, and celestial ...

A new model has been developed to simulate interstellar activity within our solar system and the nearby Alpha Centauri system ...

Probing these wacky celestial bodies can help us understand how conditions beyond our solar system may yield planets vastly different from our own, said study author Thomas Baycroft with the ...

The astronomers spotted the planet using NASA's Transiting Exoplanet Survey Satellite (TESS), an MIT-led mission that ...

Astronomers have found thousands of exoplanets — worlds beyond our solar system. Most of them are in single-star systems, ...