Avatar

Dim lights please

@lunareclipse-13

Mars//she/they//
Avatar

93 years old in the nursing home full throttle alzheimers just quoting youtube poops at the nurses

Isnt full throttle alzheimers that show about those kids who try to resurrect their mom?

Hey boggoblin420 how does it feel to be the funniest motherfucker here

“miss piggy could do better than kermit” and you know what? she probably could! miss piggy is a catch. she’s a businesswoman, supermodel, actor, singer, she knows fucking karate. she’s extraordinarily by all counts. anyone would be happy to have her. but you know what. kermit makes her happy. kermit plays straight man to all of her hilarious endevours. kermit loves her. and she loves kermit. she doesn’t WANT better. she wants KERMIT.

we need to respect a beautiful womans choice to have the most wonderful cringefail husband in the world. ok.

So poor people don’t deserve to have money?!

THEY’LL JUST WASTE IT ON SURVIVAL! 

Also, if you’ve taken more than a high school economics course taught by someone who has never stepped foot in a college economics class,

Giving $500 to poor people multiplies it REALLY FAST. That $500 immediately goes into the economy and ripples more purchases until it hits a rich pocket.

Giving $500 to a billionaire takes $500 out of the economy permenantly. You could have set it on fire and made no difference.

That is such an important part of the conversation that rich people seem to purposefully misunderstand whenever it’s brought up

Money exists to be spent, not hoarded. Yes, people should have saving, but no one should be sitting on a pile of money too big to spend in a single lifetime. “The economy” as a concept only works if people are spending money, and the people hoarding the money are so quick to blame the people who barely have any when the economy starts to fail

Having a big string of numbers in an offshore account doesnt make you an economic genius, it makes you a parasite that is ruining the economy for everyone else

fucks me up that by total coincidence the sun and moon's size difference is exactly matched to their difference in distance from us, thus making our beautiful total solar eclipses where you can see the silver threads of the sun's corona possible because the moon just covers the sun completely

The stars (literally) aligned just right for this experience to be possible. It's likely that aliens don't have this

The moon is also absolutely gargantuan by moon standards. It isn't the largest moon in the solar system, but it is BY FAR the largest in comparison with its planet. Ganymede is the largest satellite of Jupiter and the largest moon in the solar system. Its diameter is only about 3.8% of Jupiter's. Titan's radius is 4.4% of Saturn's. Callisto and Io are the next largest in the neighborhood, with 3.4% and 2.6% the diameter of Jupiter respectively.

Our moon is number 5. It is smaller in direct comparison to the above moons. The diameter of the moon is 3475 km. That is a full 27% of the diameter of the Earth. More than a quarter. That's ridiculous. It's unheard of. The universe is large enough that the word unique probably doesn't mean a lot, but this might be about as close as you get.

This has had a huge impact on our planet. Other things aliens might not have are significant tides. One of Mars's dumpy little potatoes wouldn't be able to move oceans the way our moon does.

Our moon has also stabilized our axis to a massive degree. Without her up there our axis would wobble all over the place and our climate would be far more chaotic. Aliens might not be quite so lucky.

I guess what I am really trying to say is that the moon is extremely cool. I like the moon.

Just want to add that the reason we have such a large moon is because a whole planet crashed into proto-Earth. Theia (the planet) and Earth got so superheated by this collision that their component cores fused and the impact jettisoned a lot of material into space. That massive amount of jettisoned material became our moon. So Earth and the moon have very similar composition. This does not seem to be a common method of lunar formation.

what if the answer to the fermi paradox is that life cant exist without a moon like luna

Avatar

I got a serious beef with the Fermi paradox. There is no Fermi paradox. There stopped being a Fermi paradox once the first radio telescopes went up, and we began to get a true sense of the sheer scale of the universe.

Space is big, empty, and loud. Sunspots can cause enough interference to affect global communications. We’re not even loud enough to talk over our own sun. On our own planet. We can barely communicate with Voyager, and we know exactly where it is and what its signal sounds like.

The Fermi paradox is like doubting the existence of Belfast, because you stood on a windy New York beach shouting towards it and didn’t get an answer.

Avatar

the thing is that our specific kind of life-bearing planet may very well be a rarity; we're within the Goldilocks zone of a medium-size yellow star (an estimated 75% of stars in the Milky Way galaxy are red dwarfs), and yes, without the Theia event, it's very likely that complex life would never have developed on Earth, because not only does Luna help by keeping the oceans moving and thus causing life-facilitating elements and compounds circulating, but the impact also set the Earth's core spinning and generating a magnetosphere that protects us from solar winds and radiation; Mars's atmosphere of about 0.01 bars and its aridity are partly because it doesn't have these protections

it may be that large satellites of gas giants might be the "safest" place for life to develop, staying warm through tidal heating and protecting the liquid ocean beneath a thick layer of ice; the best places to find life elsewhere in the solar system might very well be Europa, for example, or even in parts of Jupiter's atmosphere

the other thing is that life is probably common in the universe, because we've actually demonstrated in a laboratory that if you just put a bunch of the right elements in water and pump energy into it, you get proteins forming, and four specific nucleotides (adenine, cytosine, guanine, and thymine) are the building blocks of RNA and DNA

not only that, but we've found, like, free-floating clouds of amino acids in deep space

it's improbable to the point of being indistinguishable from impossible that we're the only intelligent life in the universe, and although we might be the only intelligent life in our home star system, it's quite probable that there's life elsewhere here, just not in a place we can easily see it

[ID] Single-panel XKCD comic shows 2 ants on a floor of tiled linoleum, stretching into the distance. They're both facing each other.
The ant on the right says “We've searched dozens of these floor tiles for several common types of pheromone trails. If there were intelligent life up there, we would have seen its messages by now.” /text
A caption at the bottom of the page reads "The world's first ant colony to achieve sentience calls off the search for us." [End ID]

@asymbina And everyone else in this thread,

... The moon does not keep the oceans moving. The impact did not "set the core spinning". I don't know who told you these things but they are not true.

Source: I am a geologist. But you can also just... google this stuff.

Firstly, the Earth's core:

The Earth's core is in two parts: a liquid metal outer core, and a solid metal inner core. The outer core has convection, caused by differences in temperature and therefor density - warm hot less-dense material rises, cools and becomes more dense, and sinks back down. This convection of liquid metal creates a magnetic field. It is this magnetic field that is driving the rotation of the solid inner core.

Nothing to do with the moon or a giant impact. Just electricity and magnetism. The core of the Earth already existed before the giant impact, and the giant impact did not touch Earth's core. The rest of the Earth was already rotating and thus already had rotational energy; it did not need an impact to give it this energy.

Next, let's tackle the Moon.

The moon affects tides, but tides are not ocean currents and are a completely separate process. Also, we'd still have tides without the Moon, because the Sun also gives us tides. They'd just be different and a lot smaller, about 1/3 the size they are right now.

But furthermore, tides and the Moon have NOTHING to do with ocean currents.

There's two main ocean currents: surface currents and deep ocean currents. They do not necessarily move in the same direction because they are caused by two different things:

  • Surface currents are powered by wind.
  • Deep ocean currents are powered by changes in water density, caused by differences in salt concentration and temperature.

None of that has anything to do with the moon and it never has.

The Giant Impact and Life

If anything, the giant impact reset the biological clock on Earth. We have no idea if this helped or hurt. Different scientists will give you different answers so we cannot definitively say "Life on Earth as it is now would not exist without the impact".

Generally, what life actually needs is huge swaths of time to develop undisturbed. A giant impact that completely devastated whatever pre-biotic mechanisms were assembling is not what I would personally call helpful, but some scientists argue the impact added a few last bits of essential ingredients to the mantle and crust that didn't get integrated into the core because the core was already formed at that time.

Goldilocks Zones

Now, moving on to Goldilocks zones aka habitable zones: you can get them around stars that aren't medium yellow stars like ours. Red giants have a habitable zone too. Most stars have habitable zones.

Science is currently expanding the definition of what a habitable zone is; if we look beneath the surface of the crust of a planet like Earth, we can find life! Microbes can live in wet rock too. Plus, there are potential habitable zones on moons orbiting planets like Jupiter, which is far beyond the ice line of a solar system like our own. But Jupiter causes strong tides in its moons which can create heat inside those moons, thus making them warm enough for water and maybe life.

There's also the way cooler method of getting a moon that I didn't see mentioned here, which is catching one in the wild. Neptune did this, with its moon Triton originally being a Pluto-like dwarf planet before being captured.

Also, isn't Earth quite at the edge of the Goldilocks zone? (as defined as allowing surface liquid water without a runaway greenhouse effect)

Like, the estimates I saw for the lower edge are at like 0.95-0.99 AU, while the upper edge is at least 1.3 and probably more like 1.7 AU, so it's not like we're really in the middle.

Other question, aren't early K type stars better suited for Earth-style life than a G type like the Sun? More common and longer-lived without having the instability and tidal locking of red dwarves.

(Disclaimer, I'm not a geologist or an astrophysicist, just an amateur who's quite interested in these topics, so I'd prefer if someone more qualified could weigh in)

one thing I like about the Hunger Games is that the characters' knowledge of the worldbuilding feels grounded in their histories and circumstances rather than "what's relevant to the plot at this moment" or "what the reader needs to have explained to them". No one is randomly either completely oblivious (person who has lived in Panem their entire life needing to have the entire concept of the game explained to them) or weirdly omniscient (some kid who has never left their home district before randomly explaining the in-and-outs of Capitol politics in great detail).

When Katniss volunteers, right at the beginning, she knows that that's a thing that can happen - the careers do it every year, that's their whole shtick! She doesn't know off the top of her head what the proper procedures are to volunteer, because that part has never really been relevant to her, in District 12, and she's panicking.

In general, she has an idea of how the Hunger Games works because she's seen it on TV every year for her entire life. She only knows the specifics when she goes out of her way to look for them, because it's never mattered before. It makes the characters feel more like people and not mouthpieces for exposition.

Me: "Hey yeah, so I invited another high school friend over because they wanted to sell me on another pyramid scheme, so I spiked their coffee with like 40 tabs of acid and chased them around the house while singing that I was the devil and that the nightmare would never end."

Priest giving confessional: "Okay we don't normally tell people this, but that's actually a secret way to get into heaven."

PSA to New Tumblr Users

DON'T CENSOR YOUR TAGS. DON'T.

Write out 'Suicide' Write out 'Rape' Write out 'Abuse' & 'Assault' & 'Gore'

If you don't use the real words in your tags? People won't be able to filter those out and stay SAFE.

You need to tag properly to keep everyone safe.

Don't water down warnings just because social media has trained you to water them down.