In a solar system about 1,800 light-years from Earth, two planets smacked into one another in an impact that vaporized them both. And astronomers caught them in the act.
An incandescent blob of leftover planet, lingering after an impact, could explain a surge of infrared light from a remote star, researchers report October 11 in Nature. And the ensuing debris field could also explain a subsequent dimming of the star, the team says. While scientists have glimpsed planetary debris in other solar systems before, no one has seen the smoldering remains of a collision between exoplanets until now (SN: 5/8/23).
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