Our solar system’s origin story spans billions of years and involves clouds of gas, cosmic collisions, and planetary ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

A team of international astronomers led by Richard Teague, the Kerr-McGee Career Development Professor in the Department of ...

A new analysis of planet formation models estimates the odds of a theoretical Planet Nine orbiting our sun at 40% given ...

In the search for planets beyond our solar system, many scientists focus on finding worlds that could support life. But ...

Of the roughly 6,000 exoplanets we’ve discovered, a significant number are in the apparent habitable zones of their stars.

A team of astronomers discovered that planet-forming materials can survive and persist even in some of the most extreme ...

A new study from the University of Arizona reveals an unexpected way that planets' cores might form in our solar system.

This discovery challenges long-standing ideas about how planets form and orbit in the cosmos. And it shows that space still holds many surprises. The planet—named 2M1510 (AB) b—moves around a ...

"How planets are born is an unsolved area of research," astrophysicist Daniel Price of Australia's Monash University told Newsweek.

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.