3 ms·

Does it trigger an ELE?

• jdiff 2y ago
  No, the article says the only noticeable effect was a particularly bright star. The same amount of material received from the supernova is absorbed by earth each day. It was an ordinary Tuesday besides the lightshow.
• BurningFrog 2y ago
  ChatGPT says: In astronomy, ELE stands for Extinction-Level Event
• perihelions 2y ago
  An exceptionally large cosmic radiation source could cause mass extinctions—it's a postulated explanation for several of the geologic ones. That's not due to the radiation itself. The mass column of the atmosphere—equivalent of a 10-meter thick water layer—is plenty adequate radiation shielding. Rather it's secondary effects of the interaction of radiation with the high atmosphere, such as the destruction of ozone. https://arstechnica.com/science/2020/08/researchers-propose-a-supernova-triggered-the-late-devonian-mass-extinction/ https://arstechnica.com/science/2020/08/researchers-propose-...
• chasil 2y ago
  "As matter expands away from the blast site, it thins out, so by the time the ejecta from a nearby supernova reaches Earth, perhaps a few hundred metric tons might rain upon our planet over a length of time. That might sound like a lot, but about that same amount of meteoric material slams into our atmosphere every day. So supernovas aren’t appreciably adding to Earth’s weight, nor are they a big danger to us in this way."