By Will Dunham WASHINGTON (Reuters) -Scientists are tracking a large gas planet experiencing quite a quandary as it orbits ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

Planetes means “wanderers” in ancient Greek, referring to the fact that as the planets and Earth orbit the sun, those dots of light in the sky appear to move relative to the background stars.

A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Located about 120 light years away, the exoplanet appears to take an unusual path ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Planets of this size are largely unexplored beyond our solar system, making it a significant step forward as astronomers search for Earth-mass planets around sun-like stars, Basant said.

The planets are so small that they are more analogous to Mars, according to Basant. “When compared to our solar system, each of the four planets are inside the distance of Mercury’s orbit ...

Scientists may have found a new Tatooine-like planet outside the solar system that orbits two failed stars. Located 120 light years away, the planet appears to take an unusual path around two ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 light-years from Earth.