A combination of the world's most powerful telescopes detected the planets. Astronomers have confirmed the existence of four planets orbiting a star less than 6 light-years away with help from ...

New observations upended scientists' standing hypothesis about how a star would engulf a planet, causing its demise.

Right now, a lot of planets are visible in the night sky. A great alignment, which occurs when all the solar system’s planets are visible at once, has just ended, but you can still spot most of ...