When Archaeologists discover remains preserved in ice, what types of biohazard precautions are utilized?

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• When Archaeologists discover remains preserved in ice, what types of biohazard precautions are utilized?
• How does chemotrapy cause hairloss?
• Where did dinosaurs live?
• How is the amount of mixing quantified in a mixed quantum state?
• In what ways does Game Theory account for irrational actors?
• Are band gaps experimentally measured or can they be predicted to a certain precision?
• Why do black holes in a binary system spiral inwards instead of remaining in a stable orbit of each other?
• What Does Rabies Do to the Brain?
• How does the brain physically recover from traumatic events?
• If ice takes up more space than water, and 90% of an iceberg is underwater, why doesn't the melting of the polar icecaps lower the sea level?
• How are sea levels measured?
• Do fish "breath" heavier if they have to swim fast?
• How is the insulin transfer into the bloodstream regulated?
• What kind of metals are found on Triton?
• I've heard that babies take some time to recognize colors. After birth they are supposed to know only black and white. Is that true? If so, how does this happen?
• What exactly makes the sound when a lightning bolt strikes something?
• What exactly does it mean when talking about the universe being flat or curved?
• What factors contribute to how similar siblings look?
• Can we identify distant planets that does not have an orbit passing between us and their star? E.g. We are looking from up/down to the system. If so, how?

When Archaeologists discover remains preserved in ice, what types of biohazard precautions are utilized? Posted: 02 Aug 2019 04:22 PM PDT My question is mostly aimed towards the possibility of the reintroduction of some unforseen, ancient diseases. submitted by /u/IntenseScrolling [link] [comments]

How does chemotrapy cause hairloss? Posted: 02 Aug 2019 09:12 PM PDT submitted by /u/Camaratha [link] [comments]

Where did dinosaurs live? Posted: 03 Aug 2019 02:55 AM PDT During the Jurassic stage, was Pangaea a thing or was the continents separate? And if they was where certain dinosaurs only native to selected geographical locations? Also did dinosaurs evolve like we did and is there any evidence of this? submitted by /u/rhubardcustard99 [link] [comments]

How is the amount of mixing quantified in a mixed quantum state? Posted: 03 Aug 2019 05:41 AM PDT Consider a system of 3 qubits. Then the highest mixing allowed by the 2-qubit reduced density matrices is them being equal to the identity in a two-dimensional subspace. How is the amount of mixing determined in a mixed state? I know a two-partite state is maximally mixed iff all coefficients of the convex combination of pure states are 1/n (n being the dimension of the state). But when is a non-maximally mixed mixed state more mixed than another non-maximally mixed mixed state? How does one determine the highest mixing allowed in such a system? submitted by /u/KindheartedFireant [link] [comments]

In what ways does Game Theory account for irrational actors? Posted: 03 Aug 2019 05:33 AM PDT My understanding of Game Theory is limited, so please feel feel to correct me on any of the following logic that leads me to my question: Game theory posits that, when acting rationally, every action in a given contest has an objectively-correct response. But how does Game Theory account for the irrational actor? Even just on a relative or "unofficial" basis? For example: I'm facing Kasparov in chess. He knows more than me about the workings of the game, therefore I'm less capable of rational acting than he is in our contest. Game theory would posit a certain set of actions, but I'm me and he's Kasparov. He'll probably follow what GT says he would do. I might as well be playing Jenga. Does Game Theory account for the fact that, compared to Kasparov, I am completely irrational? If so, how? Thanks in advance!! submitted by /u/ThrowawaysStopStalks [link] [comments]

Are band gaps experimentally measured or can they be predicted to a certain precision? Posted: 03 Aug 2019 02:05 AM PDT I understand what band gaps are, how they differ for conductors, insulators, and semi-conductors, and generally why they exist, though I not have taken quantum, electrodynamics, or modern physics, so my knowledge may be incomplete. submitted by /u/_Sunny-- [link] [comments]

Why do black holes in a binary system spiral inwards instead of remaining in a stable orbit of each other? Posted: 02 Aug 2019 02:53 PM PDT submitted by /u/Hexidian [link] [comments]

What Does Rabies Do to the Brain? Posted: 03 Aug 2019 12:32 AM PDT I've Google'd around but haven't found anything exceedingly clear. Does anyone know, once the rabies virus travels from the peripheral nervous system to the brain, what it actually does there? Is this an area in which our body of knowledge is simply sparse? I came across this article which provides some insight. https://news.uaf.edu/research-may-reveal-how-rabies-induces-specific-behavior Namely, it shows that the rabies glycoprotein binds to and disables nicotinic acetylcholine receptors in the brain. Similar to what it does in muscles. But I'm looking for more detail on how mechanisms like this, or anything else that the rabies virus does, actually induce aggression, hydrophobia, and behavioral changes. submitted by /u/CaliforniaHooligan [link] [comments]

How does the brain physically recover from traumatic events? Posted: 02 Aug 2019 09:27 AM PDT submitted by /u/frying_pans [link] [comments]

If ice takes up more space than water, and 90% of an iceberg is underwater, why doesn't the melting of the polar icecaps lower the sea level? Posted: 02 Aug 2019 07:31 AM PDT submitted by /u/godsgiftnoblefamous [link] [comments]

How are sea levels measured? Posted: 02 Aug 2019 11:10 AM PDT In an article about the current problem of rapidly melting ice on Greenland, I read the following: "Up to half the surface of the island's ice sheet is thought to be currently melting, with runoff equivalent to a 0.5mm rise in global sea levels in July alone." How can scientists determine that? I mean I understand that they are calculating how much ice had melted and how much that amount of water adds in top of the current sea levels, but how can we accurately determine the sea level we're starting out with? The seas are constantly moving and under the influence of tides, storms, evaporation, rain etc. I guess scientists are averaging that out somehow, but can we even determine the circumference of the Earth to such a precise degree (fractions of millimeters)? submitted by /u/pandaelpatron [link] [comments]

Do fish "breath" heavier if they have to swim fast? Posted: 02 Aug 2019 08:48 AM PDT So we run for example we begin to breath heavy and fast as our muscle need more oxygen. Does this also happen with fish where they need to take in more water if they are escaping a predator? What about birds and reptiles? Now that I think about it I've only seen mammals breath heavy after running/moving quickly in general. submitted by /u/TheGulpmaster [link] [comments]

How is the insulin transfer into the bloodstream regulated? Posted: 02 Aug 2019 10:07 AM PDT I suppose you need to detect the sugar concentration?! But how and with which receptors? And is there some "holding back mechanism" in beta-cells or is just the insulin production reduced (by closing Glucose channels)? submitted by /u/Spac3junkie [link] [comments]

What kind of metals are found on Triton? Posted: 02 Aug 2019 09:55 AM PDT Hi /r/askscience, I'm doing some reading on the different moons in our solar system and in the descriptions I've found of Triton it says that the surface consists of icy rock and "some metals". However, I can't seem to find any information anywhere on exactly what metals they're talking about and in what abundance the occur on the moon. Do we simply not have this information? That would make sense to me since we have sent limited probes that far out in our solar system. What's the word on this? submitted by /u/TheRealTrashmaster [link] [comments]

I've heard that babies take some time to recognize colors. After birth they are supposed to know only black and white. Is that true? If so, how does this happen? Posted: 02 Aug 2019 05:45 AM PDT submitted by /u/spirit-salamander [link] [comments]

What exactly makes the sound when a lightning bolt strikes something? Posted: 02 Aug 2019 07:10 AM PDT Also sorry in case flair is wrong. Got a tiny bit confused. submitted by /u/FeathersofFear [link] [comments]

What exactly does it mean when talking about the universe being flat or curved? Posted: 02 Aug 2019 07:34 AM PDT This is something I've never managed to get a grasp on. In laymans terms would it mean that if the universe was flat things would go on forever if you traveled in a straight line, and if it was curved you would eventually end up back at your starting point? But there's also an inverse curve or something too isn't there? submitted by /u/Amooses [link] [comments]

What factors contribute to how similar siblings look? Posted: 02 Aug 2019 11:12 AM PDT Is it mostly genetics between the mom and dad, random chance, diet, other external stimuli? submitted by /u/WHOmagoo [link] [comments]

Can we identify distant planets that does not have an orbit passing between us and their star? E.g. We are looking from up/down to the system. If so, how? Posted: 02 Aug 2019 05:06 AM PDT submitted by /u/vovsuchinternet [link] [comments]

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AskScience AMA Series: We are bio-engineers from UCSF and UW who just unveiled the world's first wholly artificial protein for controlling cells, which we hope will one day help patients with brain injury, cancer and more. AUA!

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• AskScience AMA Series: We are bio-engineers from UCSF and UW who just unveiled the world's first wholly artificial protein for controlling cells, which we hope will one day help patients with brain injury, cancer and more. AUA!
• Is it theoretically possible to surround the sun with solar panels and “harness” the sun?
• How do scientists measure the temperature when trying to get to absolute zero?
• Why are solar sails reflective? Wouldn't the momentum transfer from the photons to the sail better if it were matte?
• How is Accutane made?
• Is rotating black holes' gravitational field perfectly spherical?
• How do we know that red shifted light from distant galaxies is from expansion rather than it being an intrinsic property of light traveling a great distance?
• When a supersonic bullet decelerates below Mach 1 is the path of the bullet disrupted and why?
• Can you have two colds at once?
• How does NASA colorize black and white photos of Hubble?
• How does a shockwave kill you?
• Hubble Telescope has been producing the best space images for decades, and is still going. Is it about to become obsolete or should we make another/better version to spread the workload?
• If an object the size of a piece of paper were placed on the surface of the sun facing earth, obscuring that area, how big of a shadow would it make?
• Can mixed plastics (HDPE, PLA, PP, etc.) be blended together as feedstock and remain cohesive in a product?
• Could Gravitational Time Dilation be a factor as to why we haven't found extraterrestrial life?
• What causes deathly food allergies and how can just merely touching something trigger a fatal reaction?

AskScience AMA Series: We are bio-engineers from UCSF and UW who just unveiled the world's first wholly artificial protein for controlling cells, which we hope will one day help patients with brain injury, cancer and more. AUA! Posted: 02 Aug 2019 04:00 AM PDT Hi Reddit! We're the team of researchers behind the world's first fully synthetic protein "switch" that can control living cells. It's called LOCKR, and it's a general building block to create circuits in cells, similar to the electrical circuits that drive basically all modern electronics (Wired called this the "biological equivalent of a PID algorithm", for any ICS people out there). Imagine this: A patient gets a traumatic head injury, causing swelling. Some inflammation is necessary for healing, but too much can cause brain damage. The typical approach today is to administer drugs to control the swelling, but there's no way to know the perfect dose and the drugs often cause inflammation to plummet so low that it impedes healing. With LOCKR (stands for Latching Orthogonal Cage Key pRoteins), you could create "smart" cells programmed to sense inflammation and respond automatically to maintain a desired level - not too high, not too low, but enough to maximize healing without causing permanent damage. BTW, we've made the system freely available to all academics, you can access the blueprints [here]. We're here to talk about protein design, genetic engineering and synthetic biology, from present efforts to future possibilities. We'll be on at 11 AM PT (2 PM ET, 18 UT). Ask us anything! Here are some helpful links if you want more background: Coverage of the announcement from UCSF and from UW Nature article about LOCKR design Nature article about designing circuits in living cells Wired's coverage of the announcement We're a team of researchers from the University of California, San Francisco (UCSF), the UC Berkeley-UCSF Graduate Program in Bioengineering, and the University of Washington Medicine Institute for Protein Design (IPD). Here's who's answering questions today: Hana El-Samad - I am a control engineer by training, turned biologist and biological engineer. My research group at UCSF led the task of integrating LOCKR into living cells and building circuits with it. Follow me on Twitter @HanaScientist. Bobby Langan - I am a recent graduate from the University of Washington PhD program in Biological Physics Structure, and Design where I, alongside colleagues at the IPD, developed the LOCKR system to control biological activity using de novo proteins. Follow me on Twitter @langanbiotech. Andrew Ng - I am a recent graduate from the UC Berkeley-UCSF Joint Graduate Program in Bioengineering. I collaborated with Bobby and the IPD to test LOCKR switches in living cells, and developed degronLOCKR as a device for building biological circuits. Follow me on Twitter @andrewng_synbio. submitted by /u/AskScienceModerator [link] [comments]

Is it theoretically possible to surround the sun with solar panels and “harness” the sun? Posted: 01 Aug 2019 10:14 PM PDT submitted by /u/Emeraldbananaman [link] [comments]

How do scientists measure the temperature when trying to get to absolute zero? Posted: 02 Aug 2019 07:09 AM PDT Wouldn't the act of measuring the temperature produce heat and how do they get accurate enough to measure it to within a billionth of absolute zero? submitted by /u/E72M [link] [comments]

Why are solar sails reflective? Wouldn't the momentum transfer from the photons to the sail better if it were matte? Posted: 02 Aug 2019 04:40 AM PDT Maybe I don't understand momentum properly, but wouldn't the direction of the momentum be better conserved if the photons didn't bounce off the surface? submitted by /u/Glowshroom [link] [comments]

How is Accutane made? Posted: 02 Aug 2019 06:58 AM PDT submitted by /u/giraffeboner1 [link] [comments]

Is rotating black holes' gravitational field perfectly spherical? Posted: 02 Aug 2019 06:53 AM PDT I recently read about the ringularity - the black hole, as it's rotating, can't have a singularity, as a single point can't rotate, so it must contain a rotating ring, which contains the mass of the black hole. However, if the above is as I understand it, then can the black holes have a non-spherical gravitational field? If an internal structure of the black hole is a 2D like, ring-shaped object, then the left-right side of the black hole should have a tiny little more mass, hence gravity, then the top-down side of our black hole, which would create a strange, ellipsoid gravitational field. Is the above is possible? submitted by /u/SirButcher [link] [comments]

How do we know that red shifted light from distant galaxies is from expansion rather than it being an intrinsic property of light traveling a great distance? Posted: 01 Aug 2019 08:51 PM PDT Could the red shifted light from distant galaxies actually be due to some unknown property of light when it travels great distances rather than from the universe expanding? For example, what if dark matter/energy weakly interact with the photons causing the wavelengths to shift. Perhaps we would never be able to measure this property of light at the comparatively minuscule distances we could achieve in a lab on Earth. submitted by /u/jpennin1 [link] [comments]

When a supersonic bullet decelerates below Mach 1 is the path of the bullet disrupted and why? Posted: 01 Aug 2019 02:12 PM PDT submitted by /u/lambisp [link] [comments]

Can you have two colds at once? Posted: 01 Aug 2019 08:33 AM PDT submitted by /u/BarcodeNinja [link] [comments]

How does NASA colorize black and white photos of Hubble? Posted: 01 Aug 2019 10:32 PM PDT Not sure if I should ask this in the Photography subreddit but I'll try here. So I found this video right now https://www.youtube.com/watch?v=fDwkDZ5dx-c and the person said there that all images from Hubble are B&W. The way they color the image is by taking three B&W photos and then assigning them a spectrum (RGB). What I want to know is how they assigned it to the spectrum. The person just clicked a button and I don't know how they did that specifically. Lastly, once all the three are assigned a spectrum, how do they blend the three images together? submitted by /u/DowntownSuccess [link] [comments]

How does a shockwave kill you? Posted: 01 Aug 2019 09:16 AM PDT Hi guys, this is a bit of a morbid question but I thought here would be the best place to get an answer. I'm unsure if I'm correct but when an explosion occurs with people in the 'blast radius' I heard main causes of death are from fragmentation and other objects which I can understand. However I have also heard that it's not the flame of the explosion that kills people it can be the shock wave. My quick question is what is the effect on the human body usually from the forces in that shockwave that is usually fatal? submitted by /u/Phillipip [link] [comments]

Hubble Telescope has been producing the best space images for decades, and is still going. Is it about to become obsolete or should we make another/better version to spread the workload? Posted: 01 Aug 2019 01:24 PM PDT submitted by /u/ElectronGuru [link] [comments]

If an object the size of a piece of paper were placed on the surface of the sun facing earth, obscuring that area, how big of a shadow would it make? Posted: 01 Aug 2019 01:56 PM PDT Obviously this is assuming the object doesn't immediately evaporate from the energy of the sun. submitted by /u/cleptilectic [link] [comments]

Can mixed plastics (HDPE, PLA, PP, etc.) be blended together as feedstock and remain cohesive in a product? Posted: 01 Aug 2019 07:22 PM PDT I'm wondering if several different types of plastic could be blended and melted together to form a product that wouldn't fall apart. Or at least be useful in some other way. I'm trying to implement a recycling program, but we can't separate the various types of plastic products/packaging. Any help/ideas would be much appreciated submitted by /u/BYRDMAN25 [link] [comments]

Could Gravitational Time Dilation be a factor as to why we haven't found extraterrestrial life? Posted: 01 Aug 2019 06:25 PM PDT Since Gravity essentially "slows time down" and mass (i.e. Earth) warps space and time, could this be why we haven't found extraterrestrial life on other planets? Is it possible that civilization could be rising and falling, rising and falling, rising and falling, at such a "fast" rate relative to us that we aren't even noticing it? Alternatively, could life be assembling at such a "slow" rate relative to us that we aren't even noticing it? Would it mean that in order to find life elsewhere, it would have to be experiencing similar Gravitational Time Dilation relative to Earth? submitted by /u/Nick_Writes [link] [comments]

What causes deathly food allergies and how can just merely touching something trigger a fatal reaction? Posted: 01 Aug 2019 06:44 AM PDT There are people with very severe reactions to foods like peanuts or bananas for example who go into anaphylactic shock after just coming in contact with an allergen. They break out into hives, start turning colors, their throat starts closing up, etc. So how does it work? What's going on at the cellular level to cause such a severe chain reaction? Surely there's no evolutionary benefit to dying from touching something that's entirely harmless to the vast majority of the rest of the species, so is it some sort of mutation? And are there other animals that have similar allergies, or is it just humans? submitted by /u/Observer2594 [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

Why does bitrate fluctuate? E.g when transfer files to a usb stick, the mb/s is not constant.

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• Why does bitrate fluctuate? E.g when transfer files to a usb stick, the mb/s is not constant.
• Why are there multiple stop codons (UAA, UGA, UAG) but only one start codon (AUG)?
• Could a GPU be custom built for a specific problem so that it solves it faster than a standard GPU?
• Can dogs percieve the 60 Hz flickering of a light bulb?
• In my experience, English speakers tend to have an exceptionalist view of our language. How diverse is English in depth and breadth of vocabulary in comparison to other languages?
• At what point are related species unable to breed together?
• How is the mass of a black hole determined?
• I just read about a potentially life-sustaining world 31LY away. Cool, but it probably won't work for us "out of the box". Is there a plan or strategy in place for a more mild version of terraforming for worlds like this?
• Does having multiple wounds in different places of the body slow down healing compared to having only one wound?
• Just as humans have different names for each other, do any other animal species have differing "calls" for other members of that same species?
• How is the lithosphere affected by global warming?
• Energy of the electrons, How does it allow metals to actually conduct electricity?
• Why don’t the space probes get fried at the End of the Heliosphere?
• Which type of energy is meant when we read the calories of food; gross, digestible or metabolizable?
• Did/do insects evolve faster than say, an elephant with a much longer lifespan?
• Did organisms evolve brains independently, or do most/all organisms share a common ancestor who "created" the brain?
• How does the jaw heal after pulling a tooth?
• Why is increasing pressure needed in the discharging valve of the centrifugal pump?
• How do we know what colors animals see?
• I understand that mating of close relatives is genetically disadvantageous. Is the converse true? Is it genetically better to mate with your 4th cousin than your 3rd cousin?
• Ask Anything Wednesday - Engineering, Mathematics, Computer Science
• Do astronauts or cosmonauts suffer vertigo while out on a spacewalk?
• Why do Hydrogen and Helium have such high thermal conductivity compared to other gases?

Why does bitrate fluctuate? E.g when transfer files to a usb stick, the mb/s is not constant. Posted: 01 Aug 2019 04:58 AM PDT submitted by /u/Alphad115 [link] [comments]

Why are there multiple stop codons (UAA, UGA, UAG) but only one start codon (AUG)? Posted: 31 Jul 2019 05:49 PM PDT submitted by /u/tofutian [link] [comments]

Could a GPU be custom built for a specific problem so that it solves it faster than a standard GPU? Posted: 31 Jul 2019 10:49 PM PDT I've heard some problems take weeks to solve, even on some of Google's processors used in research . Do GPU's sacrifice speed for 'versatility?' Or is the hardware already fully optimized to a variety of machine learning problems? submitted by /u/FakeNewsFlash [link] [comments]

Can dogs percieve the 60 Hz flickering of a light bulb? Posted: 31 Jul 2019 07:21 PM PDT I learned today that human stop perceiving flickering of a light source above 55Hz. I also learned that dogs can percieve that flickering up to 80Hz. Does that mean that every night when I turn my lights on, which flicker at 60Hz, my dog thinks he is living in an insane strobe-light madhouse? submitted by /u/zenandphysics [link] [comments]

In my experience, English speakers tend to have an exceptionalist view of our language. How diverse is English in depth and breadth of vocabulary in comparison to other languages? Posted: 01 Aug 2019 07:40 AM PDT This is prompted by a discussion on a translation of an English book into German. A favorite truism online is that English does not "just borrow words; on occasion, [it pursues] other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary", as if it is something unique to our tongue. I've also seen many statements that on pure word count, ours is one of, if not the largest vocabularies in the world. As a Germanic language with heavy influence from Greek, Latin, and French, I know English has a diverse vocabulary, with a lot of nuance between very similar words. For example, huge, giant, titanic, colossal, and enormous all mean large but definitely have different contextual meanings, as do pleased, contented, satisfied, elated, cheerful, and ecstatic. In the discussion I was reading, the example that prompted this question was that, in German, the word for both "hound" and "dog" is "Hund", requiring the name of The Hound from A Game of Thrones to be changed to Bluthund for contextual story reasons (he is called Dog derogatorily by another character) and that grew into a larger conversation on the subtleties of synonyms across languages and now this thread, where I'm looking for more of a learned answer. Is English particularly expressive? submitted by /u/208327 [link] [comments]

At what point are related species unable to breed together? Posted: 01 Aug 2019 07:34 AM PDT I saw an repost about human/Neanderthal interbreeding and wondered at what point in an species' evolution it couldn't be interbred with related species/those with a common ancestor. submitted by /u/AdmiralAlluahAkbar [link] [comments]

How is the mass of a black hole determined? Posted: 01 Aug 2019 07:16 AM PDT submitted by /u/CynicalWoof9 [link] [comments]

I just read about a potentially life-sustaining world 31LY away. Cool, but it probably won't work for us "out of the box". Is there a plan or strategy in place for a more mild version of terraforming for worlds like this? Posted: 31 Jul 2019 11:08 PM PDT Is there a tipping point where a planet's atmosphere and other factors make it suitable for making it habitable? If so, what are they looking for? submitted by /u/SpaceForceAwakens [link] [comments]

Does having multiple wounds in different places of the body slow down healing compared to having only one wound? Posted: 31 Jul 2019 08:52 AM PDT Is there a sort of diminishing return on healing based on how much the body needs to do? For instance if I have two similar cuts on each hand, will they heal slower than if I had only one cut on one hand? submitted by /u/Sergelid [link] [comments]

Just as humans have different names for each other, do any other animal species have differing "calls" for other members of that same species? Posted: 01 Aug 2019 04:41 AM PDT For example, a mother bird having different chirps for each of her chicks. Or a monkey having an individual calls for each friend. submitted by /u/Gekyumes_4skin [link] [comments]

How is the lithosphere affected by global warming? Posted: 01 Aug 2019 04:08 AM PDT Global warming affects the entire planet in numerous ways. It affects the atmosphere by having higher concentrations of CO2, it affects the biosphere because living things need oxygen to survive. It affects the hydrosphere with ocean temperatures increasing each year. It affects the cryosphere with mass ice sheet loss. However, I cannot understand how the lithosphere is affected (for a science assignment). Any ideas? submitted by /u/Rakeshmathsgod [link] [comments]

Energy of the electrons, How does it allow metals to actually conduct electricity? Posted: 01 Aug 2019 12:08 AM PDT I'm a high school student going into the 10th grade, I'm wanting to pursue some sort of electrical engineering job, after college. One thing that I want to understand before I figure out how to engineer the stuff, is how does metal conduct electricity? Also, how does the energy of the electrons in the metals allow them to conduct electricity? How fast is the transfer of energy to create electricity? submitted by /u/Bromsson [link] [comments]

Why don’t the space probes get fried at the End of the Heliosphere? Posted: 31 Jul 2019 06:08 PM PDT I've read that the heliosphere (especially the termination shock) is where all the the solar wind converge, and then smack into the interstellar wind, and abruptly drop off. Would that mean because of the drop off the spacecraft can safely pass? But then what about the interstellar wind? Why doesn't that hurt the spacecraft? I've always wondered about this, but haven't found any answers online. submitted by /u/WonderMoon1 [link] [comments]

Which type of energy is meant when we read the calories of food; gross, digestible or metabolizable? Posted: 01 Aug 2019 03:28 AM PDT submitted by /u/redditmember192837 [link] [comments]

Did/do insects evolve faster than say, an elephant with a much longer lifespan? Posted: 31 Jul 2019 11:08 AM PDT submitted by /u/MrWilee [link] [comments]

Did organisms evolve brains independently, or do most/all organisms share a common ancestor who "created" the brain? Posted: 01 Aug 2019 01:23 AM PDT submitted by /u/lordknight330 [link] [comments]

How does the jaw heal after pulling a tooth? Posted: 31 Jul 2019 03:41 PM PDT I had a wisdom tooth surgically removed today. How does the bone in my jaw heal? What will the space where the roots of my tooth be filled with? After the tooth was removed, the doctor stiched my gum together, covering the hole. What will happen to the blood that filled the hole when my gum heals and seals the space with "loose" blood in it? submitted by /u/WarriorNN [link] [comments]

Why is increasing pressure needed in the discharging valve of the centrifugal pump? Posted: 01 Aug 2019 12:20 AM PDT submitted by /u/TreeHuggerMM [link] [comments]

How do we know what colors animals see? Posted: 31 Jul 2019 04:36 PM PDT How can we know that dogs see yellows/greys/blues? On top of this, i have heard that babies only see in black and white for the first weeks/months, (if this is true) how can we know all this? submitted by /u/SickBabyKidneys [link] [comments]

I understand that mating of close relatives is genetically disadvantageous. Is the converse true? Is it genetically better to mate with your 4th cousin than your 3rd cousin? Posted: 31 Jul 2019 08:44 AM PDT Or, does it only matter that you not mate with your sibling or close cousin? submitted by /u/asaltandbuttering [link] [comments]

Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 31 Jul 2019 08:13 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

Do astronauts or cosmonauts suffer vertigo while out on a spacewalk? Posted: 31 Jul 2019 08:09 PM PDT The reason I ask this is that I feel queesy once I get above 5 stories in a high-rise.. i ain't great with high elevations, ( yeah I know. A wuss 😂 ) and after scrolling through Twitter, then seeing a photo from NASA's Twitter account from a spacewalk on the ISS. the thought occurrenced to me... Do astronauts or cosmonauts suffer from similar feelings while out on space walks? The apprehension and weak knees from looking down upon the earth from 250 miles above the surface. Can you even get into a astronaut program if you suffer from a fear of high places? submitted by /u/Berzerker-SDMF [link] [comments]

Why do Hydrogen and Helium have such high thermal conductivity compared to other gases? Posted: 31 Jul 2019 09:01 AM PDT "The value of thermal conductivity for most gases and vapors range between 0.01 and 0.03 W/mK at room temperature. Notable exceptions are Helium (0.15) and Hydrogen (0.18)" www.electronics-cooling.com/1998/09/the-thermal-conductivity-of-gases/ Why is this? submitted by /u/gg_ezgame [link] [comments]

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