Jupiter is the largest planet in the Solar System, a massive gas giant so enormous that its gravitational influence reaches ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Over the past three decades, computer models of planetary system formation have gone from fairly crude representations to ...

Found in the northern sky, GJ 3378b is a potentially rocky world with liquid water on its surface, receiving 90% of the ...

Nasa's powerful James Webb Space Telescope is showing us something humankind has never witnessed firsthand before: The birth ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A leading scientist has told Newsweek about new evidence supporting the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Astronomers have found a distant celestial body — ...

Scientists have found a massive rocky world far beyond our solar system that is more than 20 times the mass of Earth.

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...

The planet, named GJ 523b, is around 170 million years old and more than 2.5 times the size of Earth. It has approximately 23 ...

Because the planets in our solar system are so bright, they flood the telescope's sensors with more light than they can ...