A 24-year-old observatory assistant from the Midwest discovered Pluto. Clyde Tombaugh, born in 1906 in Streator, Illinois, ...

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

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

Astronomers using planet-hunting satellites have discovered a rare solar system with six planets moving completely in sync with one another, as if they were untouched by any outside force since being ...

CAPE CANAVERAL, Fla. — Astronomers have discovered a rare solar system in the Milky Way that boasts six planets orbiting in perfect rhythm like a cosmic orchestra, untouched by outside forces since ...

Learn how Pluto nearly kept its planet status in a proposed 12-planet Solar System as its demotion marks its 20th anniversary ...

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 ...

Astronomers gazing upon a star system not too far from Earth were recently treated to a marvelous discovery: a group of six planets moving around a sun-like star in a seemingly perfect cosmic dance ...

Pluto lost its planethood for a very specific reason. Whether or not that’s a good reason depends on who you ask.

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

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 ...

Buckle your seatbelts. We’re about to take a ride on the cosmic superhighway. What exactly are these celestial autobahns? How ...