This split coincides with several other classic features in the exoplanet population, such as the high abundance of small planets over large planets and a tendency for giant planets to only form ...

Scientists have used data from NASA's retired planet-hunting space telescope 'Kepler' to discover that small and large worlds have very different upbringings. The team found that larger planets on ...

The finding points toward two different pathways by which large and small planets form. "What we found is that right around ...

Collisions involving very large super-Earths or mini-Neptunes ... would be more likely to produce a less energetic collision. "Relatively small planets similar to the size of Earth are more ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

"We predict that relatively small planets (< ~ 1.6 Earth radii ... So, if we want to find a second Earth, a planet with a large moon would be a great candidate. I hope our study helps us to ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

In addition, the masses of their planet-forming disks are in general too small to form giant planets, but large enough to form rocky planets," Henning said. Scientists already have identified ...

Furthermore, whichever of those is the case would have a big impact on whether ... a streaming instability describes how small particles in a vapor-rich disk around a planet are able to accrete ...