From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

Astronomers have discovered a significant “growth spurt” in a rogue planet outside of our solar system. The free-floating planet is currently consuming gas and dust from its surroundings at a rate of ...

Interstellar comet 3I/ATLAS has caught the interest of astronomers and amateur enthusiasts alike as just the third object to ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...

Planet 9 may exist 42 billion miles away, influencing objects in the Kuiper Belt, and could be discovered with modern ...

Astronomers are investigating a strange class of exoplanets known as eccentric warm Jupiters — massive gas giants that orbit their stars in unexpected, elongated paths. Unlike their close-orbiting ...

The official number of planets outside our solar system has reached 6,000, according to space scientists. NASA's tally of exoplanets does not include more than 8,000 additional candidate planets ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...