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   Dr. Victoria Grinberg (vicgrinberg@mastodon.social)'s status on Wednesday, 15-Nov-2023 23:50:59 JST Dr. Victoria Grinberg

   Typically, the only cosmic things that disturb the "sunny side" of Earth's atmosphere come from our closest star, the Sun.

   Except, it turns out, if you get a very bright GRB, the brightest we ever detected. And suddenly a star, exploding 2 billion light-years away (the Sun is just 8 minutes light away!) can - just temporarily, for a few minutes, but still - affect the Earth's ionosphere (and possibly the ozone layer).

   More:

   ▶️ https://www.esa.int/Science_Exploration/Space_Science/Integral/Blast_from_the_past_gamma-ray_burst_strikes_Earth_from_distant_exploding_star

   ▶️ https://www.science.org/content/article/cosmic-blast-seared-earth-s-atmosphere-2-billion-light-years-away

   #astrodon