Scientists measured mass and distance of free floating planet drifting through space without star for first time.

Now, a new Nature study points to an answer by catching four planets at a stage most systems never show us: The awkward, ...

Astronomers may have finally worked out how planets between the size of Earth and Neptune – which aren't found in our Solar ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their atmospheres, ...

Planet formation used to sound straightforward: dust clumps into rocks, rocks grow into worlds, and the rest is detail. A ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune orbit most stars. Oddly, our sun lacks such a planet. That's been a source ...

Astronomers have captured an exceptionally rare view of young planets in mid-transformation, revealing how bloated, giant worlds may shrink into the most common planets in the galaxy. Astronomers have ...