My favorite fact from that article (indeed xkcd) isn’t about neutrinos though, but this:
Which of the following would be brighter, in terms of the amount of energy delivered to your retina:
A supernova, seen from as far away as the Sun is from the Earth, or
The detonation of a hydrogen bomb pressed against your eyeball?
The answer is the supernova, by 9 orders of magnitude. So the supernova at the Sun’s distance is about a billion times brighter than a hydrogen bomb pressed against your eyeball.
My favorite fact from that article (indeed xkcd) isn’t about neutrinos though, but this:
The answer is the supernova, by 9 orders of magnitude. So the supernova at the Sun’s distance is about a billion times brighter than a hydrogen bomb pressed against your eyeball.
https://what-if.xkcd.com/73/