In the second half of 2024, a nova explosion in the star system called T Coronae Borealis, or T CrB, will once again be visible to people on Earth. T CrB will appear 1,500 times brighter than usual, but it won’t be as spectacular as the event in 1054.

    • Rhaedas@fedia.io
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      2 months ago

      You’re thinking supernova, which happens only once. Novae were seen first as stars that would flare up, becoming a “new” star if it was too faint before to see. They are always a binary system, with the recurrent ones being a companion star that passes by periodically to deposit more material to flare up.

    • henfredemars@infosec.pub
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      2 months ago

      Without reading the article, I imagine it’s a binary system where a white dwarf is siphoning gases from a star. When it reaches critical mass, it goes thermonuclear.

      • illi@lemm.ee
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        2 months ago

        I saw a video on this and this is pretty much how I remember it explained.