Did you know our solar system might have had an extra planet? Scientists believe a mysterious ninth planet once existed but got kicked out long ago! This "lost" planet could have been tossed into deep ...

NASA has confirmed the discovery of a mysterious new planet beyond Neptune, shaking up our understanding of the outer reaches ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

The discovery marks a major breakthrough in understanding the atmospheric dynamics and weather systems of alien worlds ...

As the planets of Venus, Mars, Jupiter, Saturn and Neptune lined up in the sky, one year old Star gave birth at the national ...

Sure, they’re particles and rocks, but they’re still a fascinatingly long way from home. Alpha Centauri is the star system ...

Astronomers have taken a major step in understanding how planets form, thanks to the James Webb Space Telescope (JWST). A ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

During the first nights of February, the crescent moon should line up with the planets as well. The planets are spread far apart in the solar system, AccuWeather wrote. Although it can be hard to see ...

Saturn’s rings are an arresting sight even through modest telescopes. The planet is made mostly of hydrogen and helium whereas the rings are billions of pieces of mostly bright-white water ice and ...

An adorable litter of kittens has been named after planets after their mom Star gave birth on the same day as a rare ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...