Something is hiding inside Kepler-51d, and it’s doing a remarkably good job of it. About 2,615 light-years away in the constellation Cygnus, this peculiar world orbits a young Sun-like star every 130 ...

Distinguishing between brown dwarfs and giant planets has confused astronomers, but a clear separating factor has finally been identified.

Project Hail Mary's scene-stealing alien Rocky has a hilarious history, and these details aren't even found in the film.

The moons are all tiny, barely two miles across in size. When you purchase through links on our site, we may earn an ...

For centuries, astronomers faced the challenge of classifying objects in space based on their appearance. When observing an ...

A hazy, ultra-light “super-puff” planet, Kepler-51d, is hiding its secrets and challenging how scientists understand planet formation.

Greek mythology has given a name to a great many objects in our solar system. But perhaps one of the least well understood ...

Spin separates giant planets from 'failed stars' Clearest evidence yet that giant planets spin faster than their cosmic lookalikes. (Nanowerk News) Astronomers have ...

For decades, astronomers have struggled to differentiate giant planets from brown dwarfs, a class of objects more massive ...

A massive crater on asteroid Psyche may hold the key to whether it’s a lost planet’s core or something more complex. New simulations suggest NASA’s upcoming mission could finally solve the mystery.

Asteroid 16 Psyche has puzzled scientists for more than 200 years. Now, new research suggests that its large craters could hold the key to understanding where it came from—and how planets formed in ...

Astronomers have taken a closer look at one of the strangest planets ever discovered, and it is raising more questions than ...