The phoenix planet: Astronomers find a world reborn from its star's ashes

edited by Gaby Clark , reviewed by Robert Egan

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Add as preferred source Artists impression of the second-generation planet orbiting HS 0209+0832, the first such planet to be found orbiting a white dwarf. Credit. Dr. Snehalata Sahu / University of Warwick. Astronomers have discovered the first example of a second-generation planet orbiting a white dwarf, a world that appears to have formed from the remains of the dead star it now orbits.

A team of astronomers led by the University of Warwick has identified the first second-generation planet ever found around a white dwarf. While similar "reborn" worlds have been suspected to exist around pulsars, this discovery shows that a second generation of planets can form around this much more common stellar remnant.