science_memes

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DessertStorms, (edited ) in uncomfortable levels of eye contact
@DessertStorms@kbin.social avatar
Zehzin, in The dangers of doing science during a dry spell
@Zehzin@lemmy.world avatar

Do you give the yogurt to mice or do you eat it yourself?

troyunrau, in uncomfortable levels of eye contact
@troyunrau@lemmy.ca avatar

Aside from being a meme, the factoid isn’t even true.

en.wikipedia.org/wiki/Tidal_locking#Moons

All twenty known moons in the Solar System that are large enough to be round are tidally locked with their primaries [planets]

fossilesque,
@fossilesque@mander.xyz avatar
oce,
@oce@jlai.lu avatar

I was skeptical thank you for the confirmation. Especially because the time it takes to lock depends on the relative size of the bodies. Our moon being exceptionally big relatively to our planet, if it has locked, then relatively smaller moons should have locked long before.
Btw, the locking is not perfect, there’s a little oscillation of the moon called libration, so we can actually see about 59% of it over the years.

Embargo,

It just says other moons. Not all other moons. Meaning the meme isn’t untrue… Right?

troyunrau,
@troyunrau@lemmy.ca avatar

Pedantically speaking, yes. At least some small moons do freely rotate. But they are all very small and very far from their parent planet. If you were on the surface, you wouldn’t see details.

Mars has two small moons close to it, but neither rotate relative to the surface. They’re also really small and zip about super fast so they’re cool for other reasons.

topinambour_rex, (edited ) in uncomfortable levels of eye contact
@topinambour_rex@lemmy.world avatar

It’s the heaviest part of the moon which face us. And even when it will reach it’s farthest and definitive orbit ( the moon slowly move away from us), it will still the same face toward us.

samus12345, in uncomfortable levels of eye contact
@samus12345@lemmy.world avatar
sigmaklimgrindset,

Thank you Eiji Aonuma, very cool.

gmtom, in i <3 statistics

Even if we planted a trillion trees it would only have a tiny affect on climate change. Same with killing large amounts of people. The only way we combat climate change effectively is getting off fossil fuels.

M137,
@M137@lemmy.world avatar

It’s disturbing that so many think that just more trees is the solution. It really shows how dumb and ignorant most people are.

tygerprints, in It's just science.

Pretty sure they have 100 percent mortality rate as most animals do. There are some species of jellyfish that technically are immortal (capable of immortality anyway) - they revert back to a polyp stage and start life over again without dying. But every other animal species, like us humans, does have to bow down to the grim reaper at some point.

Cralder,

“Caterpillar” is not a species. It’s a stage of some animals’ life cycle. It means 99% of catepillars die before they become butterflies or moths or whatever

StorminNorman, (edited )

Yeah, they’re also wrong about jellyfish being the only immortal animals. Gotta love being confidently incorrect…

tygerprints,

If there are other immortal animal species, what are they? My comment about jellyfish being immortal was from the article in national Geographic. What are the animals you are thinking of?

StorminNorman,

The hydra. There’s a species of worm (pretty sure it’s a flatworm, could be a round one though). Technically, lobsters are too. They also aren’t cos growing their news shells is incredibly taxing and that’s how the old ones usually succumb, but yeah, genetically, they do the whole telomere regeneration shit. Their DNA is like 17yo when they die at age 130. So, yeah.

tygerprints,

Hydra, eh? According to the web, hydra are "virtually immortal" in a lab environment. On the other hand, though I've heard lobsters could be immortal, the web (which obviously is the only true source of info, wink wink) says it's a myth, eventually the lobster will die "from exhaustion during a moult." However I know they can live a long long time, many animals can easily out live humans.

Interesting stuff, thanks for the comments.

StorminNorman,

Oh ffs. I swear to god we don’t deserve the internet. I literally pointed out that lobsters do die. The reason we can consider em immortal is cos they clean up their telomere damage. You colossal idiot. You’re trying to trip me up and “expose” me, but you can’t even get the fundamentals right…

Slovene, in help

Also when trying to fold fitted sheets.

Hegar, in weevil booties!!

Bootied trunk bug, got it.

KazuyaDarklight, in uncomfortable levels of eye contact
@KazuyaDarklight@lemmy.world avatar

Knows that we aren’t to be trusted, can’t turn it’s back on us for a second.

DragonTypeWyvern,

Or is it just waiting for its second chance to hit us?

Kase,

Second chance???

ericisshort,

The moon is not to be trusted. It’s hiding a secret alien base on its dark side.

KazuyaDarklight,
@KazuyaDarklight@lemmy.world avatar

It’s not aliens, it’s Nazis, moon Nazis. (Lookup “Iron Sky” if you don’t know it.)

uphillbothways, (edited ) in uncomfortable levels of eye contact
@uphillbothways@kbin.social avatar

It's tidally locked to earth. Earth isn't tidally locked to it. Happens slowly due to gravity and differential mass. Relatively stable satellites end up tidally locked given the time. Pretty sure lack of water/liquids/atmosphere hastens the process.

Bassman1805, (edited )

Yeah, Earth’s moon isn’t the only satellite to tidally lock to its planet. In fact, several are.

Photos and Deimos are tidally locked to Mars. 8 of Jupiter’s moons and 15 of Saturn’s. Pluto and Charon.

Mercury is tidally locked to the sun, but it’s in 3:2 resonance rather than 1:1.

Zombiepirate,
@Zombiepirate@lemmy.world avatar

Now those are some fun facts.

DharmaCurious,
@DharmaCurious@startrek.website avatar

Can you ELI5 that last one?

PoisonedPrisonPanda,

Guys please upvote we all need an eli5

brianorca,

Mercury orbits the sun every 88 earth days. It spins on its axis every 59 earth days, relative to an outside observer (sidereal day.) That makes the solar day (from sunrise to sunrise) 179 earth days long.

Kase,

So in a certain sense, a ‘day’ on Mercury is 2.034090909090 ‘years’ long? (Solar day divided by orbiting the sun, lol)

brianorca, (edited )

No. I rounded off the numbers. A Mercury day is exactly 2 Mercury years. Which is why it’s “in resonance”. That means that gravity will speed up or slow down the rotation to keep the ratio stable over time.

Kase,

Oh that’s really neat!

ivanafterall, in uncomfortable levels of eye contact
@ivanafterall@kbin.social avatar

All of the other moons are severely autistic. Ours is balls-out confident. "Yeah, bitch, what. You blinked."

ThePyroPython, in uncomfortable levels of eye contact

PROLONGED EYE CONTACT

DepressedCoconut,

Boo?

ThePyroPython,

AH! You started me, I didn’t see you there.

Zehzin, in It's just science.
@Zehzin@lemmy.world avatar

99% is pretty impressive, most species have 100% mortality rate

Shawdow194,
@Shawdow194@kbin.social avatar

That's an interesting point!

Any animal that changes or metamorphosises into a different animal technically has a less than 100% mortality rate

fossphi,

Hmm, interesting indeed! I get what you’re trying to say, but I would also tend to believe that it’s still the same animal? If not that, then wouldn’t the caterpillar cease to exist when it metamorphosised into something else?

Albbi,

Caterpillar is not actually an animal though, it’s a stage of life.

fossphi,

Aah indeed, now I’m aware :)

DroneRights,

Animals are a social construct

Shawdow194,
@Shawdow194@kbin.social avatar

I would also lean closer towards 'same animal' but its physical morphology undergoes such drastic changes its definitely blurred lines

Psychologically I think there are tests that show butterflies and moths retain memories from pre-metamorphisis stages

Metaphysical questions are so cool just because we may never be able to answer them!!!

fossphi,

As mentioned in one of the comments, since caterpillar is just a stage of life, I guess it isn’t as much of a contradiction/paradox then.

But yes, stuff like this is loads of fun! :D

DroneRights,

This is why the infant mortality rate isn’t 100%

Waluigis_Talking_Buttplug,

I think noting caterpillar is the same as say infant death rate for humans

Cralder,

“Caterpillar” is not a species. It’s a stage of some animals’ life cycle. It means 99% of catepillars die before they become butterflies or moths or whatever

averagedrunk,

I wish it were 100% in tomato hornworms. Seeing that 99% of them die before turning into moths makes me think all of the surviving ones just hang out in my garden.

NoSpotOfGround, (edited )

So caterpillars do have a chance to be “immortal” and transcend instead to a superior state of existence* at the end of their time. Whoa.

*that is, unfortunately, very mortal.

ininewcrow, in It's just science.
@ininewcrow@lemmy.ca avatar

Alien species discovers earth … “Holy shit Kang! These little bipeds are delicious! And all you have to do is support whatever community or belief they follow and they’ll go anywhere you tell them”

tygerprints,

Delicious and spectacularly dumb. What did they think we meant when we said our books are about serving man.

ininewcrow,
@ininewcrow@lemmy.ca avatar
tygerprints,

But there's still more space dust on this book. It's actually "how to cook for humans." Oh wait - no, it's "how to cook Forty humans."

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