Earlier quoted context omitted.
Please read the article along with bikeshedding titles. It's a good one.
No. The title sounds like low effort clickbait trash.
Clickbait is appealing. This sounds like the opposite.
How many supernova explode every year?
91–100 of 196 posts
Re: How many supernova explode every year?
#92Re: How many supernova explode every year?
#93Earlier quoted context omitted.
HUGE SPOILER ALERT. SERIOUSLY, PLAY OUTER WILDS. It's a little more than just " the sun will also go supernova". The core conceit of the games story is that you're living in the final moments of dying universe.
The fact that there is a supernova isn't much of a spoiler. It's more like the premise of the game. It's difficult to not discover this within the first 30 minutes.
The joy of "discovering" it for the first time is a precious memory that would have been a great deal less precious if I had known it would happen ahead of time. It's worth not spoiling.
Re: How many supernova explode every year?
#94Earlier quoted context omitted.
Does it need fixing?
Since I'd like to live forever, then yes.
I have to imagine that very few people would make statements like this if we lived in a universe where there was any real danger of it happening. It would be interesting to talk to humans that have lived even a few hundred subjective years, if any existed. That seems to be enough time to lead to very different perspectives on something like immortality.
Given the information storage constraints of our minds, I wonder if there is even some age that makes immortality subjectively different than very long life. We don't seem to be capable of remembering even a full decade of experience. By the time you reach a few hundred years of age, would you have any memories at all of your first century? You might not have experienced a single "death" event, but the "you" that was born may have long since died.
Re: How many supernova explode every year?
#95Earlier quoted context omitted.
It's in the article. SN2067aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa vs SN2067aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa. Apparently astronomers find base26 very straightforward and reasonable!
That is unfortunate. With only two prime factors, one of which being 13, base 26 is even worse than base 10, and it doesn't even have anatomical coincidence to recommend it. Much better to use base 36 -- we have a ready made character set for it by simply adding the digits to the 26 alphabetic characters. This gives us many more integer prime factors. Not as good as base 60, but better than base 26 and finger numbers…
Why the assumption that base36 would use the western alphabet. If they use Cyrillic, they'd have 33 chars. If they use Japanese, they'd have 46 chars. Using Hindi, they'd have 50 chars.
https://wordfinderx.com/blog/languages-ranked-by-letters-in-...
I have no clue as to the accuracy of this website, but accuracy isn't something we strive for when making ridiculous comments on the interwebs, is it?
Re: How many supernova explode every year?
#96Earlier quoted context omitted.
Since I'd like to live forever, then yes.
Are you sure? At some point you have heard every possible joke that can be told in a timeframe of 10 minutes, 1000 times.
It's very unlikely that I am capable of remembering every single joke that can be told in a timeframe of 10 minutes. If you were to take every such joke in a random order and put that on a loop, the experience would likely be one of perpetual novelty, even if you repeated it 1000 times.
Re: How many supernova explode every year?
#97That's one of my favourite hints in Outer Wilds. You will see a Supernova. Not with a fancy telescope, it's visible to the naked eye, and if you watch the sky you'll see another soon enough. You can see this right at the start, and unlike the random direction of the probe launch you don't need any game lore to, if you're smart enough, put two and two together.
I hope that game will be treated like LothR or Shakespeare, it is truly special experience.
Re: How many supernova explode every year?
#98Earlier quoted context omitted.
This reminds me of this quote from Jill Tarter of SETI, specifically the last sentence: “Might it be the discovery of a distant civilization and our common cosmic origins that finally drives home the message of the bond among all humans? Whether we’re born in San Francisco or Sudan or close to the heart of the Milky Way Galaxy, we are the products of a billion-year lineage of wandering stardust. We, all of us, are wh…
Too idealistic view on human nature. We discovered vastly different cultures in the past, no hint of humility (rather exact opposite) or bonding, unless we find a common enemy.
Taken cynically though, is this quote not simply describing the ultimate common enemy?
Re: How many supernova explode every year?
#99If I got the math right, then about 1 in every 32,000 stars in the universe goes supernova each year. That's scary. But I think I'm getting the math very wrong. edit: I guess my error might be related to confusing a probability factor with the number of incidents in a period. edit: The right answer is probably up to 1 in every 10bn stars go supernovae in the universe each year (or 1 in 10bn die and a fraction are sup…
A star "lasts" about 10 billion years, so you'd expect about 1 in 10 billion stars to 'die' each year, but only a tiny proportion (the very largest) go supernova. Numbers are huge. Even tiny ratios mean something like 10-100 stars go supernova every single second somewhere in the universe. Sounds a lot? Only about 1 star per galaxy goes supernova per century. A lot of galaxies. Mindblowing.
So only 0.12% of all main sequence stars, have the mass that can become the most common type of supernova, and they apparently only last for about 100 million years.
Re: How many supernova explode every year?
#100Hmm… So that's cool, but now I'm thinking: the distant galaxies are redshifted and time-dilated in equal proportion, and also more densly packed because the universe was smaller in the past, so I expect the actual rate of supernovas to be significantly smaller than simply multiplying 1/century/galaxy by 1e11 galaxies. Edit: also I don't know if rate of supernovas changes over history thanks to different steller envir…
I would imagine the supernova rate to be higher in the early universe, as we've already passed peak stellar formation rates and the heavier (and shorter lived) stars were more likely to be formed earlier when the average density of the universe was higher.
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