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There's a Smashed Planet at the Heart of the Helix Nebula

An X-ray signal has been detected at the very centre of the Helix Nebula, at the site of its central white dwarf star. It’s a burned out stellar remnant that doesn’t usually emit flashes of X-ray radiation but a new study has been analysing the outburst. The team of researchers think that the stellar corpse smashed into one of its surviving planets and that the X-rays are coming from the planetary debris as it falls onto the surface of the white dwarf.

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