Recent comments in /f/askscience

No_Dig3340 t1_jbzisxw wrote

Reply to There are certain species of mushrooms that can't be cultivated artificially and only found naturally in the wild, are there also any plants that are unable to be grown artificially? by PianoTrumpetMax

Yes, many plants are difficult to cultivate outside of the wild. Probably too many to name. But for exactly the same reason, the have relationships with mycelium and other soil organisms that cannot be recreated in captivity.

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BeneficialWarrant t1_jbziikc wrote

Reply to How and where is oxytocin stored in the hypothalamus? by Aaronlvx

The answer is sort of both.

The cell has its perikaryon (body) in the hypothalamus (supraoptic nucleus) and axonal extensions in the posterior pituitary. So its inside of a cell of the supraoptic nucleus but its in the region called the posterior pituitary

Neurons are often quite long and synthesize neurotransmitters (or neurotransmitter precursors) in one area but then transport them intracellularly to a target area.

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PlaidBastard t1_jbzeutw wrote

Reply to comment by JonseyCSGO in Is the percentage of mass in the parent star, comparable between different systems? by bizzehdee

Oh, yeah, it's actually pretty widely agreed that most stars are in multiple systems, although I have no idea how many of those are on the scale of thousands or more AUs. Close-in binaries and trinaries churn everything up in such a way as to ensure planet formation doesn't really happen, according to lots of simulations and some pretty solid first principles physics justifying all of that.

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Narwhal_Assassin t1_jbzcasy wrote

Reply to comment by LeN3rd in As they still have a neutral charge, can antineutrons replace neutrons in a regular atom? by Oheligud

You’d have an up quark-antiquark annihilation, and a down quark-antiquark annihilation, leaving behind an up quark and a down antiquark. These have charges of +2/3 e and +1/3 e, respectively, so they can combine to form a meson with a +1 charge (I forget what the specific name would be, probably a pi meson?). So, the proton-antineutron annihilation is totally fine in terms of charge conservation and in terms of not leaving solo quarks.

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JonseyCSGO t1_jbza4zy wrote

Reply to comment by PlaidBastard in Is the percentage of mass in the parent star, comparable between different systems? by bizzehdee

There's one big caveat to add on to this as well: a lot of current conjecture is that more stars are in multi-star systems than not. //Don't have a reputable source for this, am armchair at best with any of this.

I don't know how widely accepted it is that more stars are in binaries+ than not; regardless, in those systems you'd have a large variation in planetary creation and a non-trivial percentage mass in the partner star.

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nuclear_splines t1_jbz9vkm wrote

Reply to comment by [deleted] in There are certain species of mushrooms that can't be cultivated artificially and only found naturally in the wild, are there also any plants that are unable to be grown artificially? by PianoTrumpetMax

I don’t think that’s what they’re saying at all; it’s not that it hasn’t been done, it’s that no one’s found a practical way to do it at scale and make pig milk (pilk?) a viable product

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slashdave t1_jbz9uck wrote

Reply to comment by danby in What exactly is going on when a protein (or other molecule) binds with a receptor? by Eat-A-Torus

>Why on earth would we be only interested in simple cases?

We aren't. The statement "we don't have a good way of modeling the dynamics of proteins" isn't correct. If you want to amend that to "complex systems", you might have an argument, but there are also accelerated MD methods that are quite effective.

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