Record-setting black hole 'echo' accidentally uncovered by high-school student
by Jenna Ahart

Live Science    Translate This Article
26 March 2025

On 26 March 2025 Live Science reported: While sifting out signatures of supernova remnants, a high-schooler stumbled upon the afterglow of a dormant black hole. It may be one of the largest ever seen. Global Good News service views this news as a sign of rising positivity in the field of science, documenting the growth of life-supporting, evolutionary trends.

Long after the black hole in the center of a galaxy sputters out, you can still see its ghost lingering in surrounding gas clouds aglow with leftover radiation, like wisps of smoke emanating from an already extinguished flame. Astronomers call these cosmic ghosts 'light echoes' -- and that's what high-school junior Julian Shapiro found while scanning the cosmos for supernova remnants.

...Shapiro currently pegs the light echo at about 150,000 to 250,000 light-years in diameter -- about 1.5 to two times the width of the entire Milky Way galaxy. And if his estimates hold up, he thinks it could be a viable candidate for the largest light echo ever discovered.

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