In the vast calm of the solar system, planetary orbits often appear orderly, stable, and insulated from the broader mechanics of the galaxy. Earth circles the Sun with regularity. The outer planets ...

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

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies these rocky, or "terrestrial," worlds are far more common than was suspected ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

Webb telescope discovered a bizarre exoplanet with carbon atmosphere, no hydrogen, orbiting a super-dense spinning star.

Far from the bright glare of the Moon, a much smaller companion has been quietly keeping pace with Earth, looping around the ...

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

P erihelion – or the Earth's closest approach to our host star – will take place on January 3, 2026. At this point, our planet will be around 2.5 million kilometers ( 1.5 million miles) closer to the ...

Learn more about PSR J2322-2650b, a lemon-shaped exoplanet that may be in a toxic relationship with its host star.

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