As Planet Discoveries Pile Up, a Gap Appears in the Pattern
quantamagazine.org
quantamagazine.org
So, any system that is not part of Dark Matter yet is either: 1) unconducive to life (or complex life, anyway) 2) was already zapped by the EAILD 3) like us, is in a transient state where the EAILD hasn't arrived yet, but we haven't learned how to cloak our solar system yet either
Again, the key here is that planets just slightly larger than Earth are the most likely to evolve intelligent life, so they nearly always end up cloaking, and thus we don't see them.
Enjoy.
That makes it possible, not likely.
For any population N > 2, it's less likely that you'll be last than that you will not be last.
I think that generally I agree with you, but I would tend to say you have a small (but >0) number of things that would have huge long term ripples.
Many people became educated and even advanced science before the government got involved in education.
If that's true, only a very small fraction of planets with intelligent life would land in the window where we can observe them.
Another option is that you might have many civilisations that are just as intelligent, and just as developed, but not in the same fashion - imagine 99% of intelligent species out there are more like dolphins than like humans.
Or their atmosphere is just a bit more hazy than ours, so they are not aware of the night sky filled with sky, so with less curiosity to imagine the world outside of theirs.
Just to add to the lore, we can already detect galaxies without dark-matter. Which would be galaxies already scrubbed of intelligent life by the EAILD
http://www.astronomy.com/news/2019/03/ghostly-galaxy-without...
Which, given that HN points don't actually buy you anything, is fine. But, I wonder what it means that the first hour was mostly upvoting and the hours since then mostly downvoting. Maybe people are in a more positive mood in the morning? Or maybe it doesn't seem worth downvoting until a bunch of other people have commented on it.
Or, of course, perhaps the EAILD is attempting to bury it with 'bot downvotes. In which case, I guess we're already doomed...
Kinda sad to think that there may be nothing but space out there.
I'm not really seeing anything in the non-log scaled y-axis data. But the log scales of both data do seem to show three clear 'islands' of planetary sizes.
EDIT: These' islands' in the data correspond to 3 planetary types (kindaaaa): Big and heavy super-gas-giants, small and lighter rocky planets, and heavy and smaller-ish gas giants. It's interesting to see there is a gap between the gas giant sizes and that it's not continious, despite them all being the same-ish mass.
However, gap generally reserved for lower valleys ie band gap etc. So, while shorter the term is simply misleading.
Also you should be aware that astronomy and astrophysics has quite different conventions for naming things than say condensed matter. Part of the reason is that historically they were a separate science from physics. Part of the reason is that most of the knowledge is gained from (passive) observations, not actively controlled experiments.
https://iopscience.iop.org/article/10.3847/1538-3881/aa80eb/...
The problem is that modelling the formation all the way from micron sized dust to 100000 km diameter planets is hard (14 order of magnitude in length scale). No single model does all steps well, most of them do not include some steps at all.
Note: this does not mean that the models are useless. There is some things we can already learn and smart people work on improving the models. But as usual, HN overestimates the power of numerical models. Modeling real life is a bit harder than launching a ruby web app. And takes MUCH more compute power.
Another example to illustrate the difference between "physics based and good enough" to "accurate but expensive" would be the algorithm by Jos Stam in a paper title "stable fluids". It is fast enough to run real time fluid simulations e.g. for water in a computer game, but is very dissipative, i.e. it removes small eddies. So while a ship moving through water simulated with that algorithm is going to LOOK great, you will get a totally wrong and inconsistent estimate of the drag on the hull. Not something you care about for a computer game, but something that might change your results if you try to do science with it.
For one brief moment I thought some fool scientist had opened up the Bore. Light!
On a serious note; I wonder whether the size of planets has much bearing on whether life could be started or sustained, or if this is usually trumped by other factors.
No more spoilers! Now you must read it!
If you are fishing for me to run out of books that are "better" than TBP, honestly, it would be a long list. If you are genuinely interested, tell me what kind of books you like, and I will be glad to give you more.
I guess I'm looking for sci-fi involving grand picture of the universe or 4X-style books, but not necessarily limited to it.
Out of the books you've named, I've read Diamond Age and Neuromancer and while I can't say anything bad about them I still like the Liu Cixin's book more.
"Deepness in the Sky" is on my to read list.
I haven't read Martin Iden, but liked Alaska stories a lot. Remarque is good, but I like Heinrich Böll much more.
Of course, you might also enjoy Piknik na Obochine, Trudno Bit Bogom, and Neukratimaya Planeta, as people of your particular background tend to do ;^)
Though that last one didn't really age well as I grew up. Oh, and Chekov is amazing when compared to the other famous Russian authors imo.
Your turn for some recommendations, i.e. your top 3, since I am looking for stuff to read. Not necessarily in this genre.
I am not sure about top 3, but if I had to reread something I've read before, I'd start with Dostoevsky's 'Idiot', continue with "За миллиард лет до конца света" by Strugatsky brothers, and maybe I'll reread the Permutation City by Greg Egan.
As for the Three Body Problem, I find it unique in that it realisticly represents the humanity's place in the galaxy (a fly on the wind shield). Lui Cixin's cosmic sociology [0] rings true to me too. The idea of laws of physics being the result of the activity of advanced civilizations, while not original (see Lem's “The New Cosmogony”), is fascinating nonetheless. The story of how 'right' moral choices in the context of that world lead to the end of humanity is another original bit.
[0] https://whatever.scalzi.com/2014/11/11/the-big-idea-liu-cixi...
https://en.wikipedia.org/wiki/Victor_Pelevin
I might have one more author, if it turns out the book wasn't by the guy above. Unfortunately, I don't even remember the name, and I don't see it in his bibliography.
For reference, my current favorite SF is the Night's Dawn Trilogy. Not sure if that flavors my 'review' for anyone.
It (and the whole trilogy) have a handful of really good ideas. The translation at times seemed clunky, the pacing was, uneven and the plotting was not quite as tight as I would have liked. But the handful fo good ideas were good enough that the book stayed with me for a while.
TBP's characters are comical. Not much else to say - the womanizer slacker obsessing over the quiet girl was too much to keep reading. Well, that, and some of the "brilliant defense strategies."
That sounds smart, but both assertions are wrong.
I am imagining it like pouring a cup of sugar on a dinner plate and shaking the plate around until the amount of sugar on the plate is sort of stable. The excess material ends up outside the solar system (Oort cloud / kuiper belt) or part of gas giant cores and moons.
With that, there is only so much material in the inner solar system to work with and the law of averages works out and we end up with similar sized planets.
I would assert a hypothesis that a ratio of material in the inner solar system is linked, in some way, to the size of the star. That it is unlikely there will be massive earths out there in the inner solar system because of this natural distribution of material around a star.
I have no formal training at all. Just an IT nerd that watches a lot of Kurzgesagt.
* Is the gap a measurement artifact? (Presumably not). * Are there other, small gaps besides the Fulton gap discussed in the article?
You can stop reading the article after that line.
The "standard model" of science that seems to be embedded in the heads of the Greater Internet Commetariat is pretty ludicrously nonsensical in a number of places.