Mashable
A dead star core about 145 light-years away in space is doing anything but resting in peace.
Astronomers have learned that this white dwarf , the remnant of a medium-size star after running out of nuclear fuel, has gobbled up a rocky planet from its former system. The weird part: This white dwarf isn't newly deceased but has been a corpse for about 3 billion years.
The star remnant, called LSPM J0207+3331, demonstrates that even very ancient planetary systems don't become cosmic ghost towns after their host stars perish, but remain active for a long time after, challenging assumptions about the end stages of a star, including those to come for our own sun .
A dead star that no longer generates fusion doesn't cease to influence its surroundings, John Debes, a co-i
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