Two planets outside the solar system have been identified orbiting a star located nearly 250 light-years away from Earth in ...

M57, also known as the Ring Nebula, is a planetary nebula—the glowing remnant of a sun-like star. At its center lies a tiny white dot, the star’s hot core, known as a white dwarf.

Astronomers have discovered two new exoplanets that are similar to other worlds found in the Milky Way, but unlike any in our ...