Is the Radiolab account off? That the impact basically fried the surface of the entire planet at > 1000 degrees? Wasn't that also kind of the premise of Sevenev

Is the Radiolab account off? That the impact basically fried the surface of the entire planet at > 1000 degrees? Wasn't that also kind of the premise of Seveneves? That a bunch of particulate matter gets into the atmosphere and rains down, on reentry it burns like the space shuttle but with so much of it around the entire planet it basically bakes the entire earth In the Radiolab episode they claimed the entire planet is covered in the baked layer. That you can dig anywhere on the planet and find it. https://www.wnycstudios.org/story/dinopocalypse/ https://www.wnycstudios.org/story/dinopocalypse/ at about the 10 minute mark or visual https://www.youtube.com/watch?v=ZYoqtBEzuiQ#t=15m https://www.youtube.com/watch?v=ZYoqtBEzuiQ#t=15m Is that still a valid theory?