Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

On Episode 176 of This Week In Space, Rod Pyle and and Tariq Malik are joined by Alan Stern to talk about what's next in deep ...

When 1I/'Oumuamua was first spotted in 2017, astronomers quickly determined that it came from outside the solar system. But ...

These planets have circular orbits similar to the orbits of planets in our solar system. At least two of the recently detected planets have approximately circular orbits.

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

"The results provide a rare, detailed look at how planet-forming chemistry operates in the extreme environments around brown ...

Astronomers have directly spotted a rare young planet, WISPIT 2b, still forming within the gap of a dusty ringed disk around ...

Carbon dioxide has been detected on a planet outside our solar system for the first time. The gas has been observed directly by the James Webb Space Telescope on four exoplanets, all belonging to ...

Such synchrony may occur when planets first form, but astronomers theorize that as time goes on, its likely for orbits to get knocked out of rhythm.

PLANET MAKER. In this artwork showing the early solar system, an enormous dust disk stretches around the Sun and serves as a breeding ground for new planets as material clumps together.

A smaller planet more like Earth or Mars could have been pushed to the outer reaches of our solar system (or into deep space), according to a new paper. Scientists think Planet 9 used to be more ...