Scientists study 'afterglow' from two exoplanets' collision

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“It showed the system doubled in brightness at infrared wavelengths some three years before the star started to fade in visible light,” according to the“To be honest, this observation was a complete surprise to me. When we originally shared the visible light curve of this star with other astronomers, we started watching it with a network of other telescopes,” said Matthew Kenworthy, co-lead author from Leiden University, in an official release.

The afterglow of a huge planetary collision refers to the long-term ramifications and visible effects of a high-impact clash between two enormous celestial bodies.The star received the name ASASSN-21qj in recognition of the network of telescopes that initially observed its fading luminosity. “Our calculations and computer models indicate the temperature and size of the glowing material, as well as the amount of time the glow has lasted, is consistent with the collision of two ice giant exoplanets,” said Simon Lock, co-lead author and research fellow at the University of Bristol.

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