A decades-old cosmic mystery may finally be solved. Scientists now suspect that the strange X-ray glow from a distant white ...

For centuries, planets beyond our solar system—called exoplanets—existed only in theory and science fiction ... star passes directly in front of a background star, as seen from Earth.

Scientists have discovered a new planet, Enaiposha, that defies existing planetary classifications. Found 47 light-years away ...

For the first time, scientists have been able to map the atmosphere of WASP-121b - also known as Tylos - in 3D and what they found sounds like something out of science fiction. The planet is 900 ...

NASA's James Webb Space Telescope has detected 55 Cancri e, a super-Earth located 41 light-years away. The planet is five ...

Many of you, like myself, were probably taught in grade school that Pluto was the ninth planet in our solar system, and, ...