11 comments

[ 0.21 ms ] story [ 39.8 ms ] thread
How many nukes equivalent?
The estimates in the article are on the order of 10^61 erg (not sure why they used this unit), which is around 10^54 Joule, or 10^42 kilotons. Even the biggest nukes are below 10^5 kiloton, so this would be about 10^37 of them.

Not that you'd ever get that many because 10^61 is about 10^7 solar masses worth of energy.

CGS is still commonly used in astrophysics, for some reason.
On a side note, I remember watching an episode of How The Universe Works and they were talking about a massive explosion that was so big and gave off so much energy in two minutes, the analogy used was this:

It was the equivalent of 1000 trillion nuclear bombs going off every second for 100 billion years.

And that's what it put out in two minutes!

Mind blown!

Edit: I think the total energy was measured in Yottawatts. Oh and it was Michelle Thaller and Hakeem Oluseyi that quantified it if it makes any difference...

Edit2: Found the episode here: https://youtu.be/BhME6wejT6U?t=1830

The Soviet Tsar Bomba had a power output of about 5 Yottawatts (about 1% of the Sun) - only for a few nanoseconds though!
My puny human mind struggles to comprehend the scale of things like that when I'm surrounded by things that "only" measure, at most, in KW.
That reminds of part of an XKCD What If - 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?

https://what-if.xkcd.com/73/

What I want to know, is how bright does a light have to be to blind you if the back of your head is facing it.