this post was submitted on 17 Nov 2023
571 points (96.7% liked)

Science Memes

10853 readers
2865 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.



Rules

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.


Research Committee

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago
MODERATORS
top 48 comments
sorted by: hot top controversial new old
[–] zeppo 67 points 11 months ago (2 children)

Not breathing oxygen is way more toxic, though. That will kill you in a few minutes.

Sure, I imagine off-world lifeforms having entirely different metabolism. Like when we hear “this planet has a methane atmosphere” it’s like holy cow, sounds rough, but alien entities would possibly think the same thing about our planet of water and nitrogen. Imagine how horrible it would sound to someone who was water-soluble. “H2O rains down from the sky!!”

[–] [email protected] 44 points 11 months ago* (last edited 11 months ago) (1 children)

You live on a world where the temperature is only on average 288K? It's so cold there that H2O exists in its solid form on the surface in places!!! How can you people even move let alone have any active biological processes?

Sent from LTT9779b

[–] [email protected] 15 points 11 months ago* (last edited 11 months ago) (1 children)

Ayo, when you purge our planet, can you take out Devin first please? He ate my crayon in pre even though I TOLD him not to just a minute before!

[–] [email protected] 7 points 11 months ago (1 children)

yeah, i second that. get Devin first.

[–] [email protected] 5 points 11 months ago* (last edited 11 months ago)

Ok, the county of Devon will be wiped out first. Any other requests?

[–] [email protected] 9 points 11 months ago (1 children)

We keep finding life on earth in places where we didn't think life was possible. And yet, when we look at the stars we have the nerve to talk about there being a "goldilocks zone" for planets in other solar systems, like that's the only way life could exist there.

I'm sure there's life out there somewhere, and I wouldn't be surprised at all if carbon/water based life turns out to be a minority in the universe.

Yes, water is a simple compound made of some of the most common elements in the universe, so it's reasonable to think other life might also evolve to use it. Carbon is also a really handy element for making complex molecules, and is also really common. But, it's a failure of the imagination to think that life elsewhere has to follow the same basic chemistry as here on earth.

[–] cynar 15 points 11 months ago (1 children)

Unfortunately, most life will likely be Carbon based, in some manner (synthetic life could be different). The key is forming the large, complex molecules that make life, life. You need an element that can form chains. You also need to attach things to those chains.

The only 2 atoms that can do this are carbon and silicon. Both can form "organic" type molecules. Unfortunately, silicon has an additional reaction pathway that makes the chain easily break down in the presence of water. The conditions for silicon based life are so odd as to be unlikely to happen on the scale needed by natural processes. There might be some work arounds we don't know about, they would be extremes.

Synthetic life is another story. Once you have active control over your environment, a number of other options open up. The first step is the kicker however, getting from abiotic natural rubble to a working replicator.

There's a reason we are looking in Goldilocks zones, they are the most likely environment for the only process that seems viable.

[–] Kase 2 points 11 months ago

Man, I love science people. Like, are you guys aware of how cool you are? I love being around people who talk about awesome shit like this, even tho I don't understand most of it. Keep being you o7

[–] whocares314 58 points 11 months ago (4 children)

Alright the exchange is funny but

ACKTUALLLY…

Antioxidants are at best nothing and at worst bad for you. The whole thing is marketing wank. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2099529/

Yeah, I’m fun at parties.

[–] kadu 20 points 11 months ago* (last edited 11 months ago) (1 children)

Linus Pauling (the Linus Pauling) had a moment in his life when he became obsessed with the idea that antioxidants would make us all live forever.

It's also worth noting that anaerobic organisms are a thing, and they die too. Yes, cells suffer with oxidation and this is indeed related to aging, but if you remove all oxygen from the equation, any replication of genetic material will still slowly age and eventually kill you.

[–] Kase 2 points 11 months ago

So the key is to find a way to stop my cells from replicating 🤔 /s

[–] [email protected] 14 points 11 months ago (1 children)

Here's a link to an article that's not from 2007 but 2019 on antioxidants. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6828919/

[–] [email protected] 7 points 11 months ago

the daily intake of natural antioxidant sources is very important in the prevention of oxidative stress, since it has many positive effects on our health.

Well now I don't know who to believe

[–] [email protected] 2 points 11 months ago

Would invite you to my parties every time as I’ve been hoping to see someone already posted this answer so I don’t have to.

[–] [email protected] 1 points 11 months ago

Yeah i was thinking the same thing lol I just didn't want to say it

[–] [email protected] 42 points 11 months ago* (last edited 11 months ago) (2 children)

Fun fact: humans aren't responsible for the first mass extinction caused by organisms polluting the atmosphere with poisonous gas. Blue-green algae did it first, with "a decrease in the size of the biosphere of >80%".

[–] [email protected] 43 points 11 months ago (1 children)
[–] [email protected] 4 points 11 months ago (1 children)

Nobody complains about trees blooming, it’s all unfair for algae :(

[–] [email protected] 8 points 11 months ago

People with hayfever probably do

[–] Fleur__ 19 points 11 months ago (1 children)

We're going for the speed-run not the first completion 👍

[–] [email protected] 8 points 11 months ago

The 100% run.

[–] ChlorineAddict 27 points 11 months ago (3 children)

Aliens view earth like the rest of us view Australia

[–] SonnyVabitch 6 points 11 months ago

How do aliens view Australia then?

[–] [email protected] 2 points 11 months ago

Oxygen eat ya baby?

[–] RedditWanderer 2 points 11 months ago

Oh yah, the DEATH BREEDERS

[–] [email protected] 22 points 11 months ago (1 children)

Probably more like 'slowly corroding' from the inside.

[–] NoSpiritAnimal 4 points 11 months ago

Combustion is rapid oxidation, corrosion is slow oxidation, therefore corrosion is slow fire.

[–] rbhfd 22 points 11 months ago (1 children)

Are the aliens fusion-based lifeforms? They have to get their energy somewhere.

Eating hydrogen and letting out high-pitched helium farts?

[–] PainInTheAES 10 points 11 months ago

Suddenly the Wow! Signal makes sense. Just aliens helium-farting into the mic to troll humans.

[–] RizzRustbolt 19 points 11 months ago (1 children)

Not only is our atmosphere made of rocket fuel, but our planet's crust is made up of the most oxidizing substances in the universe.

Our whole planet is a massive bomb waiting for the right trigger to set it off.

[–] [email protected] 19 points 11 months ago (1 children)

The atmosphere is made of rocket oxidizer, not fuel. Fuel would be something that reacts with oxygen: Hydrogen, Methane, etc.

[–] [email protected] 2 points 11 months ago (1 children)

From the pov of an organism in a high-oxygen atmosphere, thats true. But on a planet with little to no oxygen in the atmosphere, it would have to be added separately, the same way we add fuel

[–] [email protected] 4 points 11 months ago (1 children)

That doesn't change the chemistry.

[–] [email protected] 2 points 11 months ago (1 children)

It would change how you perceive the chemistry

[–] [email protected] 1 points 11 months ago

The electron acceptor would still be the oxidizer.

[–] [email protected] 17 points 11 months ago

See: Humans Are Space Orcs

[–] [email protected] 15 points 11 months ago
[–] [email protected] 10 points 11 months ago

Relevant story involving killing aliens with oxygen https://en.m.wikipedia.org/wiki/C-Chute

[–] qaz 9 points 11 months ago (1 children)

This reminds me of the Deathworlders series.

[–] [email protected] 10 points 11 months ago (2 children)

Is that the one where humans are consensually employed by all the comparatively more advanced alien species of our galaxy as their warriors or executives because even our weakest human is significantly more powerful to any of the nearest alien due to the nature of us all having been evolved from an ancient ape species that were prone to violence?

[–] [email protected] 12 points 11 months ago (2 children)

https://deathworlders.com/ - Dunno if it goes into that detail of us evolving from violent apes, but at least from chapter zero, seems to be mostly due to us being from a "high gravity" world and having "builtin combat drugs" (adrenalin)

Considering the amount of things that can kill us, both micro and macro, and the fact that we ingest poison (alcohol, drugs and even actual frog poison) for fun, it's pretty easy for any alien life to look at us and think "holy shit, those creatures are fucking hardcore!"

[–] [email protected] 6 points 11 months ago

I second the recommendation, it's a great story. The writing isn't perfect, but it's absorbing and there's plenty of good world building and characters.

[–] [email protected] 2 points 11 months ago

There's another series like that, the Human Chronicles Saga by T.R. Harris. Humans are super strong because the gravity on Earth is much higher than on other planets. Materials on the other planets are weaker too, simply because they don't need to be as strong, so the humans can break through walls easily.

[–] [email protected] 2 points 11 months ago

So we’re like smart Klingons to them? Sweet.

[–] Stoney_Logica1 8 points 11 months ago (1 children)

We also have to regularly eat metal to live.

[–] sheogorath 1 points 11 months ago

Why do we need to eat metals but cannot do allomancy with it? SMH we're living in the worst timeline.

[–] [email protected] 6 points 11 months ago (1 children)

Pretty sure there's some worms or something that live by deep sea vents which breathe sulfur not oxygen and are believed to live forever because of this.

[–] FrostyTheDoo 3 points 11 months ago

Core takeaway: huff sulfur, live forever