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Tuesday, July 16, 2019

Could you have a binary set of moons that orbit a planet together? Not 2 moons in separate orbits, but a pair or moons rotating around each other and orbiting a planet as well.

Could you have a binary set of moons that orbit a planet together? Not 2 moons in separate orbits, but a pair or moons rotating around each other and orbiting a planet as well.

Could you have a binary set of moons that orbit a planet together? Not 2 moons in separate orbits, but a pair or moons rotating around each other and orbiting a planet as well.

Posted: 15 Jul 2019 10:56 PM PDT

Why can we bring someone with HIV to undetectable levels, but we can't completely cure it?

Posted: 16 Jul 2019 06:45 AM PDT

I'm just a little confused on why we can get rid of a majority of the virus in someone but not all of it.

submitted by /u/chrisisbest197
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Would the huge ice-filled Korolev martian crater make a good home for first colonies?

Posted: 15 Jul 2019 09:52 PM PDT

I'm picturing excavating large sections of this huge block of ice using solar or nuclear power. Much easier than digging, and the product is needed anyway. We could leave a whole kilometer of ice to protect against meteors and atmospheric conditions like the vacuum and sand.

Would this be impossible for instance if the ice is porous, poisonous, or too cracked up? It looks to me like an easy, cheap, very stable way in to colonizing..

Korolev crater https://en.wikipedia.org/wiki/Korolev_(Martian_crater)

The amazing Kurzgesagt video Life Under Ice that got me thinking about this https://youtu.be/M7CkdB5z9PY

submitted by /u/discofreak
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How do man made structures get naturally buried and forgotten over time?

Posted: 15 Jul 2019 03:46 PM PDT

Often times you hear of long lost buildings or even full cities that get buried underground and forgotten over the years. How does that happen? How does ground level get higher and higher over the years?

submitted by /u/jbenn425
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Did the Apollo 11 return capsule reach terminal velocity prior to the parachutes being engaged?

Posted: 16 Jul 2019 04:15 AM PDT

what formula is used to work this out?

submitted by /u/Iwillsaythisthough
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How many planets can be in a solar system? Is there any limit?

Posted: 16 Jul 2019 04:12 AM PDT

What is the difference between Global Warming and Climate Change?

Posted: 16 Jul 2019 12:10 AM PDT

Are insects affected if they are moved from their original place?

Posted: 15 Jul 2019 07:49 AM PDT

I left the gym the other day and a bug (a small grasshopper) accidently got into my car. I was able to set it free just after I arrived home but then I wondered if that would affect its life somehow (did it have a family? A home? Would it continue with its life like nothing happened? Would it know how to survive?). The gym is 7kms (4 miles or so) from home so I guess it's very unlikely that the bug will return to where it came from

submitted by /u/al3corvalan
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Do planes on long flights have to calculate the rotation of the Earth?

Posted: 15 Jul 2019 11:39 AM PDT

Do planes on long flights have to adjust for the Earth's rotation when it comes to distance they have to travel?

submitted by /u/Sam_Porter
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Do stars make sound?

Posted: 15 Jul 2019 11:30 AM PDT

Is there a way to turn heat directly into electricity?

Posted: 15 Jul 2019 06:33 PM PDT

The specific application I'm wondering about is implanted and/or wearable tech. Could body heat be used to power these things long term?

submitted by /u/brocktavius
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Does fish predict earthquakes?

Posted: 15 Jul 2019 06:21 PM PDT

Just hours ago earthquake happen in Bali 6.0 Magnitude (https://twitter.com/infoBMKG/status/1150923750566592512) a day before at night on canggu beach bali thousand fish washing ashore on beach https://www.youtube.com/watch?v=2PWtnrliRIs

this phenomena happen during tsunami Aceh 2004 also

submitted by /u/internweb
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Will the moon ever become un tidal locked?

Posted: 15 Jul 2019 10:27 AM PDT

So currently the moon is tidal locked, but the moon is also very slowly moving away from earth. Does this mean it will ever become un tidal locked on the distant future ?

submitted by /u/yeetyeetimasheep
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With Newton's law of cooling in mind, would boiling water take a shorter amount of time to freeze than room temp or cold water?

Posted: 15 Jul 2019 06:56 PM PDT

What I learned about it from class is that generally the bigger the difference in temperatures between two mediums the faster they would react to reach equilibrium. So would boiling water, because of how great the difference between it's and a general freezer's temperature, freeze faster than cooler temperatures?

submitted by /u/Atrophea
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Is there a chemical or radiation that can cause every cell in a body to undergo Apoptosis?

Posted: 15 Jul 2019 06:07 PM PDT

There is a science fiction idea of a "super weapon" that's designed to kill organic life without damaging inorganic matter. Now, I am fully aware of the science of apoptosis, a process of "programmed cell death" that has a cell break down and "bleb." Now, this is usually part of a cell's reaction to protect the body as a whole, with certain things activating it. Now, I ask, is there a radiation or some kind of chemical that can cause apoptosis to activate in EVERY cell in a living body at once?

​

Bonus Question: What would happen to a body if every cell were to undergo apoptosis?

submitted by /u/UndeadPriest94
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Why are more sea beaches have sand or rocks rather than clay?

Posted: 15 Jul 2019 11:41 AM PDT

Seeing as a beach is constantly being eroded by the waves, shouldn't everything be ground-up into smaller particles?

submitted by /u/ValorousViciousKoala
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Has the Simpsons depiction of nuclear power had a tangible effect on the way Americans view the concept?

Posted: 15 Jul 2019 08:34 AM PDT

Do Americans view it more or less favorably with any degree of causation being attributed to the show?

submitted by /u/SoftFluffyWaffle
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Why are bug bites itchy?

Posted: 15 Jul 2019 02:05 PM PDT

Why do bug bites get so itchy and also, why does the skin around the bite go hard? Also if diseases can pass on through bug bites such as Malaria, why don't they pass on diseases in other countries or do they? I've recently been bit quite a lot and I'm very curious, thank you in advance!

submitted by /u/obynlun
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Monday, July 15, 2019

How do non buoyant things wash ashore?

How do non buoyant things wash ashore?

How do non buoyant things wash ashore?

Posted: 15 Jul 2019 05:14 AM PDT

Just saw a post about a huge megalodon tooth that was found off the coast of North Carolina. How does something like that wash ashore? Does it ever reach the ocean floor, or has it been traveling around the world via ocean currents for millions of years until it finally reaches land? Or did it reach the shore a long time ago and was only recently exposed??

submitted by /u/seabarren
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Why is it if we stare at a bright light for too long we can still see a bright outline of said light when we close our eyes?

Posted: 14 Jul 2019 10:42 AM PDT

How do computers simulate randomness?

Posted: 14 Jul 2019 12:01 PM PDT

How do parrots (and other birds that can talk) make labial sounds like f or b if they don’t have flexible lips?

Posted: 14 Jul 2019 08:38 PM PDT

Whats the difference between all the units of radiation measurement? (Curies, rem, Roentgen, etc). Why are there so many?

Posted: 14 Jul 2019 07:31 PM PDT

How do doctors figure out if an illness/symptoms are psychosomatic?

Posted: 15 Jul 2019 01:40 AM PDT

I have been lurking on r/medicine a lot lately and the general consensus over there seems to be conditions like fibromyalgia and CFS are psychosomatic. Articles I've read can't seem to agree if this is the case. So it seems like it would be up to the individual doctor to make a decision on a case by case basis. How do doctors know this? Is it a diagnosis of exclusion? Is there any way to prove or disprove that a patient is having psychosomatic symptoms, or is it always just a guess?

If someone is getting mental health treatment already, does this rule out symptoms being psychosomatic? Especially if the treating mental health professional believes the symptoms are organic in origin? If the "physical" doctors and "mental" doctors disagree on the origin of symptoms, how do they come to a consensus?

Thank you!! It just seems like something like this would be really hard to confirm/diagnose because there is no test or diagnostic criteria for it. So I'm really curious how it is actually decided.

submitted by /u/saltshakercat
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What are the differences in the processes that create Neutron Stars, Pulsars, and Magnetars?

Posted: 15 Jul 2019 01:21 AM PDT

I am able to find numerous posts and articles explaining how they're different, but I'm not able to find anything explaining why they're different.

What are the differences in the creation process of each that causes some neutron stars to be just that, some to become pulsars, and some to become magnetars?

submitted by /u/GocoZwei
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Regulating Indoor Temperatures Between Hot & Cool Air Flow: When is it Optimal to Shut the Windows?

Posted: 14 Jul 2019 09:47 PM PDT

There is a debate in my house about when to close the windows to keep the house cool. My dad insists on waiting until the air coming inside is noticeably warmer than the air in the house. I contend that by the time we've physically detected this, it's too late and most of the cool air has been displaced. The coolest temperatures are during the night and early morning, so by mid-morning much of the cool air will have leeched away through process of equalization with the warming exterior air.

I experimented by closing the windows mid-morning rather than late morning, and found that the house stayed several degrees cooler for the entirety of the day. But he believes that I am shutting the home up prematurely and merely preventing us from reaping the full benefits of the cooler morning air.

I have searched google, and although several sources say that you should close the windows when it's hotter outside, nothing I've found speaks to the optimal timing, or how best to maximize and preserve cooler interior temperatures. We all know heat rises, but what about horizontal drift? Do we wait until it's noticeably hotter outside, or do we shut the house up early?

submitted by /u/wynden
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When a guy cums does it come from both testicles simultaneously?

Posted: 14 Jul 2019 03:11 PM PDT

Or just one per ejaculation and they alternate? Or does one operate for so many years then retires? What happens if a testicle gets cancer and must be removed, how is ejaculation affected?

submitted by /u/human8ure
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Do spiders only use webs they make and are those webs “fingerprinted”?

Posted: 14 Jul 2019 06:10 PM PDT

Do spiders have unique webs with pheromones that are specific to the spider or any chemical signatures that could distinguish the webs? I'm looking at some spiders right now and wondering if they take over abandoned webs and also if their webs have any marker genetic material or pheromones .

submitted by /u/o-rka
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If you kill an octopus while it is camouflaged does it remain that color or does it revert to its natural pigment?

Posted: 14 Jul 2019 06:08 PM PDT

Why and how did the Earth break into tectonic plates, and why is this phenomenon unique to our planet?

Posted: 14 Jul 2019 09:44 PM PDT

When did the convection currents and the subduction begin?

I've tried to google this, but there doesn't seem to be a widely accepted theory on the matter, and the latest articles were published years ago.

This is my first post on this sub, so I'm sorry if I failed to follow any format or rule. Thank you in advance! :)

submitted by /u/elizaofhousestark
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Why does hypothyroidsm cause fatique?

Posted: 15 Jul 2019 01:33 AM PDT

How is the lack of thyroid hormons making you want to sleep?

submitted by /u/DEGULINES
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What’s the consistency of the moon? Because it’s all rock is it sharp? Is it more sandy like a beach?

Posted: 14 Jul 2019 10:09 PM PDT

Can someone explain in layman’s terms how a magnetron in a radar system creates radio waves and sends it through the air? What exactly is going on when it detects an aircraft and bounces back to the receiver?

Posted: 14 Jul 2019 10:16 PM PDT

What is the difference between animal and plant proteins in regards to human digestion?

Posted: 14 Jul 2019 01:31 PM PDT

Are there any mammals with milk that isn't white?

Posted: 14 Jul 2019 03:30 PM PDT

Why is the UV index so much higher near the equator than in higher latitudes during the summer?

Posted: 14 Jul 2019 10:06 AM PDT

Newton’s third law vs Bernoulli: What causes airplanes to fly?

Posted: 14 Jul 2019 07:40 PM PDT

Is there any easy explanation possible to explane how airplanes fly?

submitted by /u/Larysander
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How did Houston communicate with the astronauts on the moon?

Posted: 14 Jul 2019 04:59 PM PDT

Are no two fingerprints alike because of the sheer number of possibilities or does something in our DNA create unique fingerprints?

Posted: 14 Jul 2019 02:43 PM PDT

Why were the first particles accelerators in a "zig zag" shape?

Posted: 14 Jul 2019 12:29 PM PDT

I recently visited the science museum in London and a particles accelerator was in display.

I would think that a circular shape is often used (for example in synchrotrons or the LHC) because it is easier to accelerate the particles within that shape, using the Lorentz Forces (I am not very knowledgable in physics). I saw some linear ones also but the principle was the same, minus the magnetic field if I recall correctly.

I wonder why the first ones were in zig zag? I believe that calculating the trajectories and the positions of the condensators is feasible, but a pain in the ass. So I wonder why they did not choose some "easier shape"?

Of course Lorentz, Rutherford and the guys working on that were way smarter and knowledgable than me so ...

Why this shape?

Also, if I understand correctly if for example an electron is slowed down (or a proton) a photon will be emitted, so this kind of shape would be a problem because of the various turns, no? How did they overcome that?

submitted by /u/Lazaryx
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How do we know how old the Earth is?

Posted: 14 Jul 2019 07:23 PM PDT
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Sunday, July 14, 2019

Are a butterfly and a caterpillar the same animal genetically?

Are a butterfly and a caterpillar the same animal genetically?

Are a butterfly and a caterpillar the same animal genetically?

Posted: 13 Jul 2019 02:17 PM PDT

How can an organism achieve such a drastic transformation using the same genome? Does a caterpillar's DNA undergo a rewrite when it metamorphoses? Is there some sort of inherent gene editing going on?

submitted by /u/Boswell_Kinbote
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Why don't meadows have bushes/trees like the land that typically surrounds them?

Posted: 13 Jul 2019 07:38 PM PDT

How has any space mission to other planets helped humans in daily life? Example

Posted: 14 Jul 2019 05:18 AM PDT

When cutting paper with scissors, do the pressure separate the molecules Par breaking the van der waals interactions or does it cut through the c-c bonding?

Posted: 14 Jul 2019 12:35 AM PDT

Hello,

My friends and I were debating this the other day. For me, there is no way that scissors could break the carbon carbon bonds. I think it is more likely that the pressure of the scissors is enough to pull the molecules appart

Can someone help us on this matter? I couldn't fine anything on the internet.

Meh, should have read the title before posting. Sorry about that

submitted by /u/LeCampeur
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Why is it that some animals can survive on a single food source while humans require a diverse diet to be healthy?

Posted: 13 Jul 2019 11:58 PM PDT

Also, aside from the obvious fact that being able to digest many different kinds of foods means that we can survive shortages of a various food, does our strategy offer any other advantages?

submitted by /u/Isaac_The_Khajiit
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How do we know hydrogen masers are reliable as frequency standards?

Posted: 13 Jul 2019 11:20 PM PDT

What is the name of the first species?

Posted: 13 Jul 2019 07:47 PM PDT

I've tried to google the name of the first organism, but I just get Bacteria or Prokaryotes. What is the earliest classified species of life?

submitted by /u/iMiscellaneous2
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Are some fat cells we store/burn more nutrient rich than others based on the foods we eat or are they all basically the same?

Posted: 14 Jul 2019 01:01 AM PDT

To simplify the question I'm going to say we burn fat in layers like an onion, which I don't think is true.

If I eat nothing but an abundance of healthy balanced foods ( enough to gain a layer fat which we'll call "good fat" )

then for a period eat nothing but Cheetos ( for my next layer of fat which we'll call "bad fat")

Is the Cheeto layer less nutrient/ does it provide less energy than the fats made from healthy foods? Or is fat just fat and there is no good or bad?

If we take away the layer burning idea and fat is burned more randomly, could it be we get little spurts of energy because our body randomly burned a bit of "good fat"?

submitted by /u/partedblinds
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If hyperglycemia / insulin resistance impairs angiogenesis, do people with Type 2 Diabetes have a lower risk of cancer?

Posted: 14 Jul 2019 12:56 AM PDT

People with Type 2 Diabetes have an impaired ability of angiogenesis due to high blood glucose posing toxicity towards endothelial cells.

Since angiogenesis is required for cancer metastasis, due Type 2 Diabetes patients have a lower risk of cancer?

submitted by /u/CytoGuardian
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Do animals with fur get skin damage from sunlight like humans do? And if so, how much does the fur protect from UV compared to significant amounts of melanin?

Posted: 13 Jul 2019 06:49 AM PDT

Why is strep throat, caused by a commensal bacteria, contagious?

Posted: 14 Jul 2019 12:42 AM PDT

I went to my doctor and was diagnosed with strep throat. I was told that after 24 hrs of antibiotics my strep throat won't be contagious. I was also told that strep is commensal and opportunistic, and a secondary infection to my viral cold. I had a break in the barrier that normally keeps the Group A strep from accessing nutrients, but the changes in conditions caused by my cold meant that my normally chill bacteria started growing out of control. I know contagiousness is due to active bacteria being spread and causing infection in others, but what I don't get is that everyone has Streptococcus pyogenes living commensally in/on them, so how can it be "spread"? It's only causing an infection in me because my barriers broke down, but surely for someone else who's healthy and hasn't had a cold that weakens their innate protection it wouldn't be an issue?

TL;DR why is strep "contagious" when everyone has it anyway?

submitted by /u/barefoot_bunny_lover
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Why does a small amount of antenna extension in devices such as portable radios and satellite cellphones make such a big impact on quality of reception?

Posted: 13 Jul 2019 11:43 PM PDT

Do all planets rotate around the same plane/ axis ?

Posted: 13 Jul 2019 04:50 PM PDT

This is hard for me to formulate but bare with me.

So since outer space is a 3 dimensional space.

Consider you're at the north pole of the sun looking to the sky, do all planets rotate at a single level as if they are aligned.

is there even the slightest off possibilty that all planets align causing a solar system eclipse of some sorts ? Or do they rotate on different axis and planes?

submitted by /u/cpt-ry
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Can a person with their right arm amputated be dominant on their right?

Posted: 13 Jul 2019 05:41 PM PDT

How often does oxygen concentration change in the atmosphere in a given area on a day-to-day basis, taking into consideration weather conditions such as rain, windiness, or humidity?

Posted: 13 Jul 2019 07:20 PM PDT

If prions are hard to destroy, why are prion related diseases so rare?

Posted: 13 Jul 2019 02:01 PM PDT

Why does oil work so well at removing stickers?

Posted: 13 Jul 2019 03:45 PM PDT

So i've noticed that oil works really well at removing stickers and I'm really curious as to how the oil works against the paper and the adhesive.

submitted by /u/Alt652-2
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If the Moon orbits Earth and Earth orbits the Sun, what does the Sun orbit?

Posted: 13 Jul 2019 04:26 AM PDT

  • Does it orbit anything at all?
  • Does it get relatively warmer or colder at any point like Earth does during the different seasons?
  • Is this a really dumb question?
submitted by /u/tammoran1
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How did large theropod dinosaurs mate?

Posted: 13 Jul 2019 10:44 AM PDT

Large theropod dinosaurs like allosaurus and tyrannosaurus had large, long, top-heavy bodies with stiff muscular tails? How would they find a correct mating position?

submitted by /u/Brayagu
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Would decompression have any affect on stopping or slowing a projectile in space?

Posted: 13 Jul 2019 06:16 AM PDT

What prompted this question is the scene in Star Trek Into Darkness where Khan and Kirk perform a space jump first by being depressurized and pushed into the vacuum of space, and then guiding themselves to an entry port on the enemy ship... that also depressurizes when it opens.

Wouldn't this exert the same or similar amount of force? If yes, would that not stop them instantly at the point of entry? Would that sudden halt kill them, or does decompression disperse air quickly enough that any incoming projectile (human or otherwise) has more than enough mass to pass right through? Are aerodynamics even at play in space?

Hope that makes sense. I'm sure there are variations depending on the size of the projectile and amount of pressure on either end, but I was curious about the physics here - both if the depressurization is equal or unequal.

The video in question: space jump

submitted by /u/KedaZ1
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How do animal species near extinction make comebacks, like the rhinos making 1000% increase?

Posted: 13 Jul 2019 10:37 AM PDT

I saw on a program years ago that females should birth as many offspring from as many different males as possible. How does that protect the inbreeding problem? Aren't all mammals subject to the same genetic restrictions regarding birth defects?

submitted by /u/Gyplok
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