When you look up at the night sky, planets seem calm and fixed. But a new study shows that nearby planetary systems can be ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.

Astronomers tracking a nearby star system thought they had spotted an exoplanet reflecting light from its star. Then it ...

Astronomers have observed a planet that in some ways behaves more like a star — including a massive growth spurt unlike anything witnessed before in a free-floating planet. The rogue planet, which ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

Astronomers photographed a baby planet, WISPIT 2b, during its formation process within a dusty ring around its star system.

In some of its most ambitious work yet, the James Webb Space Telescope looked to spot a planet in a potentially habitable orbit around Alpha Centauri A, the nearest sunlike star to our solar system ...

Using gravitational microlensing, scientists have discovered a rare, large planet at the edge of the Milky Way. The planet is only the third to be found on the outskirts of our galaxy's dense central ...