The video game "Subnautica" depicts an alien planet with many exotic underwater ecosystems. One of these is a "lava zone" where molten lava stays in liquid form under the sea. Is this possible?

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• The video game "Subnautica" depicts an alien planet with many exotic underwater ecosystems. One of these is a "lava zone" where molten lava stays in liquid form under the sea. Is this possible?
• The James Webb Space Telescope is incredibly precisely made. But it will be mounted on top of several tons of rocket. How do they make sure it doesn’t get warped in flight?
• Do women who have their babies through a surrogate mother still risk the chance of postnatal depression or does it rely on the woman having the child herself?
• How do hibernating animals conserve their muscle strength after months without using them?
• [Chemistry] My seed flour pancakes turn blue-green after cooking. Am I consuming a poisonous metal oxide?
• What is my computer doing when it's pretending to troubleshoot?
• What is happening when we see "stars"?
• What is the bond called between dissolved oxygen and water, is it a bond?
• If the moon is slowly drifting away from the Earth, does that mean it will no longer be tidally locked in a few million years?
• Can centipedes and/or millipedes naturally move backwards?
• Are there any medical benefits to ‘suffering through’ a minor illness without taking medications such as steroids and antibiotics?
• How do GRB's work?
• If someone has one strain of a virus, can you catch a different strain of it from them or can that strain manifest / change to another strain in your body?
• Why does the Trinity site still have high background radiation, but Hiroshima and Nagasaki do not?
• How do flowers follow the sun?
• Do vegetarians exhibit physiologic responses to sensory stimulation by non-vegetarian foods?
• How does adding a neutron to an atom change it so drastically?
• Why can we only listen to one person talking at a time?
• how is the nicotine in e-cig fluid and other smoking replacement products made?

The video game "Subnautica" depicts an alien planet with many exotic underwater ecosystems. One of these is a "lava zone" where molten lava stays in liquid form under the sea. Is this possible? Posted: 05 Feb 2018 10:43 AM PST The depth of the lava zone is roughly 1200-1500 meters, and the gravity seems similar to Earth's. Could this happen in real life, with or without those conditions? submitted by /u/StandsForVice [link] [comments]

The James Webb Space Telescope is incredibly precisely made. But it will be mounted on top of several tons of rocket. How do they make sure it doesn’t get warped in flight? Posted: 06 Feb 2018 03:18 AM PST submitted by /u/Cavtheman [link] [comments]

Do women who have their babies through a surrogate mother still risk the chance of postnatal depression or does it rely on the woman having the child herself? Posted: 06 Feb 2018 01:07 AM PST I hope this is the right place to ask this but I also wondered if there were other factors that influenced this, does it depend on the mother's mental health, age and other such influences? If so does the surrogate mother experience some form of postnatal depression despite not caring for the child in the long term? submitted by /u/cauliflowerandcheese [link] [comments]

How do hibernating animals conserve their muscle strength after months without using them? Posted: 05 Feb 2018 08:17 PM PST How do they don't suffer from muscular atrophy, even for several months without using their muscles? submitted by /u/gabrielbom [link] [comments]

[Chemistry] My seed flour pancakes turn blue-green after cooking. Am I consuming a poisonous metal oxide? Posted: 06 Feb 2018 02:16 AM PST Picture here, with tuna, pickles, and tomato topping. I grind flax seed, sesame seed, and sunflower seed to make a flour. Then I add egg, rapeseed oil, baking soda, and vinegar. Once cooked they slowly start changing color on the inside. The parts that were browned on the frying pan stay "brown", but the rest turns into a deep blue-green color. The flavor does not noticeably change after sitting for 12 hours. Could this be poisonous cupric oxide in my pancakes or some other dangerous oxide? submitted by /u/whiteypoints [link] [comments]

What is my computer doing when it's pretending to troubleshoot? Posted: 05 Feb 2018 08:46 AM PST I am having trouble connecting to the Wi-Fi at school. On Chrome the "There is no Internet Connection" page has the option to run Windows network diagnostics. Clicking on the option takes you to a loading screen where it says it's checking and troubleshooting all sorts of things, and it's final conclusion is to find the Wi-Fi router and turn it off and on again. This is like a bad joke from the IT Crowd! What is my computer doing when it says it's troubleshooting things? Is that just a button to press to make users think their computer is an omniscient being with the illusion of control? Does it ever actually, after going through all those loading screens that say "detecting problems", detect a problem and then solve it? submitted by /u/yummybutts [link] [comments]

What is happening when we see "stars"? Posted: 06 Feb 2018 01:56 AM PST Various times I have seen stars in my direct and peripheral vision, what causes this to happen and what am I seeing? submitted by /u/JKSimmonds [link] [comments]

What is the bond called between dissolved oxygen and water, is it a bond? Posted: 06 Feb 2018 12:44 AM PST Is there a bond or is it just diffusion due to atmospheric pressure? I'm interested in the mechanism that allows for the dissolution of oxygen in water and the relationship with temperature and salinity. Reference information would be appreciated. submitted by /u/Raggie86 [link] [comments]

If the moon is slowly drifting away from the Earth, does that mean it will no longer be tidally locked in a few million years? Posted: 05 Feb 2018 11:16 AM PST submitted by /u/ClassicalGalaxy [link] [comments]

Can centipedes and/or millipedes naturally move backwards? Posted: 05 Feb 2018 09:46 PM PST submitted by /u/AbyssalMyth [link] [comments]

Are there any medical benefits to ‘suffering through’ a minor illness without taking medications such as steroids and antibiotics? Posted: 05 Feb 2018 10:19 PM PST Given that you're healthy enough otherwise to successfully make it through the illness without other complications. submitted by /u/freckledcat [link] [comments]

How do GRB's work? Posted: 06 Feb 2018 04:17 AM PST If nothing can escape a black hole, including light, how do they emit radiation? Do gamma Ray bursts travel faster than light for a moment? submitted by /u/bstillwell15 [link] [comments]

If someone has one strain of a virus, can you catch a different strain of it from them or can that strain manifest / change to another strain in your body? Posted: 05 Feb 2018 11:49 PM PST submitted by /u/sk3pt1c [link] [comments]

Why does the Trinity site still have high background radiation, but Hiroshima and Nagasaki do not? Posted: 05 Feb 2018 09:14 AM PST So I was reading a Wikipedia article about the Trinity site where they tested the first atomic bomb (https://en.wikipedia.org/wiki/Trinity_%28nuclear_test%29?wprov=) and it says "More than seventy years after the test, residual radiation at the site is about ten times higher than normal background radiation in the area. The amount of radioactive exposure received during a one-hour visit to the site is about half of the total radiation exposure which a U.S. adult receives on an average day from natural and medical sources." Meanwhile, Hiroshima and Nagasaki are considered to have normal levels of background radiation. Some articles I read attribute the lack of background radiation levels in these places to the bombs being detonated in the air versus ground level. So why would they be different? I'm guessing perhaps the Trinity bomb was detonated closer to the ground? And why does ground versus air detonation affect the background radiation? Thanks in advance! submitted by /u/lawberdasher [link] [comments]

How do flowers follow the sun? Posted: 06 Feb 2018 03:28 AM PST How do flowers control which way they're facing and how do they know when they're facing the right way? submitted by /u/AnonymousCookie37 [link] [comments]

Do vegetarians exhibit physiologic responses to sensory stimulation by non-vegetarian foods? Posted: 06 Feb 2018 01:51 AM PST I.e. will a vegetarian person involuntarily salivate at the sight/smell of cooked meat, or have other digestive, endocrinologic etc. responses to non-vegetarian foods? submitted by /u/Your_average_Russian [link] [comments]

How does adding a neutron to an atom change it so drastically? Posted: 05 Feb 2018 08:02 AM PST For example, how does adding a neutron to deuterium turn it into tritium and make it so dangerous? submitted by /u/lightningundies [link] [comments]

Why can we only listen to one person talking at a time? Posted: 06 Feb 2018 12:43 AM PST submitted by /u/badRLplayer [link] [comments]

how is the nicotine in e-cig fluid and other smoking replacement products made? Posted: 06 Feb 2018 12:40 AM PST Is it harvested from tobacco leaves and purified, or made synthetically? The reason I ask is because I have heard growing tobacco is hard on the farmland and wondering if the rise of vaping is going to disrupt that industry, or whether it will be business as usual, just in a different form. submitted by /u/einarfridgeirs [link] [comments]

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AskScience Panel of Scientists XVIII

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• AskScience Panel of Scientists XVIII
• How effective are the black bars football players put under their eyes?
• When humans started launching satellites into space, did they end up discovering previously unknown islands?
• What is more environmentally friendly to drink soda, a aluminum can or a plastic bottle?
• Do various primates recognize humans as being primates as well?
• Would an ion-powered probe be able to get off a small asteroid?
• If gravity is the weakest of the fundamental forces, why aren't celestial bodies movement, especially those with magnetic properties, governed by electromagnetism rather than gravity?
• How do whales, the largest mammals on earth that inhabit the water, end up beached?
• Why does Kosovo have so many more people than Montenegro?
• How are expiration dates assigned to medicine?
• How does emergency contraception (morning after pill) containing levonorgestrel work? Pre-fertilization or post-fertilization MOA?
• What was the earliest known relationship between early humans and wolves/dogs, and what did they both stand to gain from the relationship?
• In a perfectly conductive wire, does information travel at the speed of light?
• What substances polluted the Earth in the 17th and 18th Century?
• The hazard symbols for highly flammable and oxydizing are very similar. Why is the oxydizing symbol so similar and what does it visually represent?
• What are you actually feeling when you feel like you have to pee?
• Is it possible to use a planets magnetic field as a particle accelerator?
• Why do rotating black holes look so weird?
• How does a person on the ground (Whilst touching a live electric wire) complete the circuit with the grounded neutral wire? Shouldn't the earth act as an insulator and not allow the electrons to flow from you to the neutral wire?
• How do internet cables and telephone poles transmit so much data all at once?
• How are a non-planetary nebulas created?
• How did differing chromosome numbers evolve?
• The Wikipedia page on Cosmic Rays says, "Studies by IBM in the 1990s suggest that computers typically experience about one cosmic-ray-induced error per 256 megabytes of RAM per month," What were these studies and how did they test this?
• How do the graphics on the super bowl field work?

AskScience Panel of Scientists XVIII Posted: 05 Feb 2018 04:54 AM PST Please read this entire post carefully and format your application appropriately. This post is for new panelist recruitment! The previous one is here. The panel is an informal group of redditors who are either professional scientists or those in training to become so. All panelists have at least a graduate-level familiarity within their declared field of expertise and answer questions from related areas of study. A panelist's expertise is summarized in a color-coded AskScience flair. Membership in the panel comes with access to a panelist subreddit. It is a place for panelists to interact with each other, voice concerns to the moderators, and where the moderators make announcements to the whole panel. It's a good place to network with people who share your interests! You are eligible to join the panel if you: Are studying for at least an MSc. or equivalent degree in the sciences, AND, Are able to communicate your knowledge of your field at a level accessible to various audiences. Instructions for formatting your panelist application: Choose exactly one general field from the side-bar (Physics, Engineering, Social Sciences, etc.). State your specific field in one word or phrase (Neuropathology, Quantum Chemistry, etc.) Succinctly describe your particular area of research in a few words (carbon nanotube dielectric properties, myelin sheath degradation in Parkinsons patients, etc.) Give us a brief synopsis of your education: are you a research scientist for three decades, or a first-year Ph.D. student? Provide links to comments you've made in AskScience which you feel are indicative of your scholarship. Applications will not be approved without several comments made in /r/AskScience itself. Ideally, these comments should clearly indicate your fluency in the fundamentals of your discipline as well as your expertise. We favor comments that contain citations so we can assess its correctness without specific domain knowledge. Here's an example application: Username: /u/foretopsail General field: Anthropology Specific field: Maritime Archaeology Particular areas of research include historical archaeology, archaeometry, and ship construction. Education: MA in archaeology, researcher for several years. Comments: 1, 2, 3, 4. Please do not give us personally identifiable information and please follow the template. We're not going to do real-life background checks - we're just asking for reddit's best behavior. However, several moderators are tasked with monitoring panelist activity, and your credentials will be checked against the academic content of your posts on a continuing basis. You can submit your application by replying to this post. submitted by /u/AskScienceModerator [link] [comments]

How effective are the black bars football players put under their eyes? Posted: 04 Feb 2018 03:24 PM PST I understand it helps with the light, the glare and the reflection from the lightspots, I was just wondering if someone had answers concerning the usefulness of the black lines football players put under their eyes. submitted by /u/QcLoCo [link] [comments]

When humans started launching satellites into space, did they end up discovering previously unknown islands? Posted: 04 Feb 2018 11:07 PM PST submitted by /u/heretodaygonetmrw [link] [comments]

What is more environmentally friendly to drink soda, a aluminum can or a plastic bottle? Posted: 04 Feb 2018 01:53 PM PST submitted by /u/Moonkeyman120 [link] [comments]

Do various primates recognize humans as being primates as well? Posted: 04 Feb 2018 06:14 PM PST submitted by /u/VendettatheGreat [link] [comments]

Would an ion-powered probe be able to get off a small asteroid? Posted: 05 Feb 2018 05:02 AM PST Who would win, an ion engine or a dinky little asteroid like this one? submitted by /u/Fireheart318s_Reddit [link] [comments]

If gravity is the weakest of the fundamental forces, why aren't celestial bodies movement, especially those with magnetic properties, governed by electromagnetism rather than gravity? Posted: 05 Feb 2018 03:31 AM PST submitted by /u/Chasen101 [link] [comments]

How do whales, the largest mammals on earth that inhabit the water, end up beached? Posted: 05 Feb 2018 05:59 AM PST I had posted this on r/explainlikeimfive and one user told me to post over here like the title says. Someone had suggested that they just end up swimming too close to shore and get pulled in by the current or that it could also be due to ongoing marine studies, such as the use of sonar, dredging, etc.What are some of the current theories/studies trying to prove as to why this happens? submitted by /u/da_lizardking [link] [comments]

Why does Kosovo have so many more people than Montenegro? Posted: 05 Feb 2018 01:29 AM PST When you look at Kosovo and Montenegro on a map, they seem really similar in size (Montenegro is actually a bit larger, at 14,000 km2 to Kosovo's 11,000 km2). Yet Kosovo has about three times as many people (1.8 million compared to 600,000). Kosovo is almost as populous as neighbouring Macedonia, which is much larger in size. Furthermore, while both countries are mountainous, Montenegro has access to the sea (which is advantageous) whereas Kosovo is landlocked and appears to have fewer resources and fewer reasons to settle there. So, why do such similar neighbouring countries have radically different population? submitted by /u/pavass [link] [comments]

How are expiration dates assigned to medicine? Posted: 05 Feb 2018 05:15 AM PST Most times the components in medicine (either pills or syrups) are chemicals. What do you take into account to set an expiration date? submitted by /u/jujulita_moi [link] [comments]

How does emergency contraception (morning after pill) containing levonorgestrel work? Pre-fertilization or post-fertilization MOA? Posted: 04 Feb 2018 09:28 PM PST I just saw this in an AskReddit thread where someone said that the morning after pill works to prevent ovulation and fertilization. This caught me a little off guard, so I wanted to ask about this here! I'm not in the US - I'm in South America. Although I eventually dropped out, I did go to med school for three years, and I distinctly remember my pharmacology professor and later an OBGYN preceptor during my first clinical clerkship saying that levonorgestrel has a higher chance of taking a post-fertilization MOA. I believe there was some study that pointed to that as well - scientists from Spain, I think? I'm trying to find something in English rather than Portuguese and the first thing I came across was this: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5102184/ For reference, emergency contraception is available without a prescription here in Brazil. Someone in class asked if it induces a miscarriage/acts as an abortive medication, and the professor started going in detail about how technically, there is a chance that the drug works to prevent a pregnancy that's already started (very early stage, though...). IIRC, the explanation given is that this particular EC "tricks" the body - it rapidly increases the progestogen levels that the body normally builds up after ovulation. This causes the endometrium lining of the uterus to thicken and then as the progestogen levels start to decline, the person who took the EC gets their period. They did say that the pre or post fertilization MOA depends on what stage of the menstrual cycle the woman taking it is in. It's funny that most of the web searches in Portuguese do mention the post-fertilization MOA. Now, when I searched for this in English, most information available (not in official research, more like Your Reproductive System 101) emphasized that this drug prevents ovulation and that it absolutely did not work the same as abortion pills. So...that got me curious, and I wanted to know what's the cause of this divergence in information. Thanks! submitted by /u/TallisTate [link] [comments]

What was the earliest known relationship between early humans and wolves/dogs, and what did they both stand to gain from the relationship? Posted: 04 Feb 2018 01:00 PM PST submitted by /u/refrainiac [link] [comments]

In a perfectly conductive wire, does information travel at the speed of light? Posted: 04 Feb 2018 10:25 PM PST Like when you press a button like a mouse click, would the information of the click travel to the computer chip at the speed of light, if the wire was perfectly conductive? Couldn't find a good answer online. Thanks. submitted by /u/SoccorMom911 [link] [comments]

What substances polluted the Earth in the 17th and 18th Century? Posted: 04 Feb 2018 09:44 PM PST Okay, so in the 20th and 21st century, there are a TON of substances that pollute the Earth, CFC, Carbon Monoxide and things like automobiles and industries and what not. What were the atmosphere degrading substances back when the world was not as advanced as it is now ? submitted by /u/vibhav_1 [link] [comments]

The hazard symbols for highly flammable and oxydizing are very similar. Why is the oxydizing symbol so similar and what does it visually represent? Posted: 04 Feb 2018 01:14 PM PST I am very sorry for such a boring question, but I'm struggling to find why the Oxydizing symbol is the way it is. I need to explain what is happening in the image so I can seperate it from the Highly Flammable symbol. submitted by /u/anyonamous [link] [comments]

What are you actually feeling when you feel like you have to pee? Posted: 04 Feb 2018 08:21 AM PST submitted by /u/levalex [link] [comments]

Is it possible to use a planets magnetic field as a particle accelerator? Posted: 04 Feb 2018 09:28 PM PST submitted by /u/haladur [link] [comments]

Why do rotating black holes look so weird? Posted: 04 Feb 2018 01:28 PM PST So I found this website from ESA where you can play around with a black hole and the rotating black hole (Kerr black hole) looks so weird. Why does it have that shape? submitted by /u/YottaEngineer [link] [comments]

How does a person on the ground (Whilst touching a live electric wire) complete the circuit with the grounded neutral wire? Shouldn't the earth act as an insulator and not allow the electrons to flow from you to the neutral wire? Posted: 04 Feb 2018 02:25 PM PST Thanks in advance. submitted by /u/StatHoop88 [link] [comments]

How do internet cables and telephone poles transmit so much data all at once? Posted: 04 Feb 2018 08:07 PM PST I know that they send data in bits of electric pulses but I don't understand how they can transmit so many calls at once or how they can show so many people different sites at once without it being too much. I can't imagine people putting a whole new wire in just because you want an extra Ethernet connection or an extra phone line. submitted by /u/luwachamo [link] [comments]

How are a non-planetary nebulas created? Posted: 04 Feb 2018 03:05 PM PST submitted by /u/Sgwyd_ [link] [comments]

How did differing chromosome numbers evolve? Posted: 04 Feb 2018 07:27 AM PST How could different chromosome numbers evolve in a species without an organism with a different chromosome count just dying because of that "mutation". submitted by /u/ManapatTheBoss [link] [comments]

The Wikipedia page on Cosmic Rays says, "Studies by IBM in the 1990s suggest that computers typically experience about one cosmic-ray-induced error per 256 megabytes of RAM per month," What were these studies and how did they test this? Posted: 04 Feb 2018 09:28 PM PST I'm asking because the Wikipedia source links to a 2008 Scientific American article that simply states the same fact with no other source to back it up. All searches for this study lead me in circles back to the same article. submitted by /u/liamemsa [link] [comments]

How do the graphics on the super bowl field work? Posted: 04 Feb 2018 03:03 PM PST How are images and text displayed? Is the field like a giant green screen? submitted by /u/iEatSponge [link] [comments]

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Similar to increasing wealth gap, are we experiencing an increasing educational gap? Are well-educated getting more educated and under-educated staying under-educated?

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• Similar to increasing wealth gap, are we experiencing an increasing educational gap? Are well-educated getting more educated and under-educated staying under-educated?
• If camera lenses are circular, why do they produce a rectangular image?
• Do you sweat if you are submerged in hot water?
• Everyone knows how the CO2 cycle works, but how does methane cycle work?
• is it possible for multiple planets to share the exact same orbit?
• What was the largest landmass or land feature discovered by satellite?
• How did people think stars work in the run up to the discovery of nuclear fusion and energy?
• Why does the far side of the moon look so different than the near side of the moon (none of the characteristic dark splotches)?
• Does light really make one lightyear per year, even though space is expanding?
• Would there be any advantage to making an interstellar spacecraft "aerodynamic" since there is no air? Is there an alternate concept of "vacudynamic" design which would provide benefits?
• How does your brain react to a Missing/failing organ?
• Is the ideal human weight based on calculated averages, or is it based on observable evidence that the body performs its best at a certain weight?
• Homo sapiens' nearest relatives live in hierarchical bands, but hunter-gatherer bands are egalitarian. Most agricultural societies are hierarchical. Was the reemergence of hierarchy cultural or did farming allow for the reappearance of previously culturally supressed hierarchical instincts?
• Does frosted glass let in less light than clear glass? If so, why?
• How did quantum physicists come to the conclusion that phenomena like radioactive decay has no cause rather than concluding that there's an unknown, random-like variable causing it?
• Why do some microorganisms look like bugs or insects? Is there any correlation between them?
• Are there any examples of animals 'practising' an ability, in the way we as humans do?
• How do we detect new, exotic, stable particles in the LHC and other similar colliders?
• How is Digestibility Determined or Measured?
• What are the fastest mass-having things in the universe?
• Human eyes have evolved to be able to see in a wide range of light intensity, have different parts of the world evolved slightly different from another according to their specific need?
• Why does Hawking Radiation result in loss of mass, and why does the loss of mass speed up as the black hole get's smaller?

Similar to increasing wealth gap, are we experiencing an increasing educational gap? Are well-educated getting more educated and under-educated staying under-educated? Posted: 03 Feb 2018 10:14 AM PST Edit: Thanks everyone for many different perspectives and interesting arguments! One of the points brought up was education and degrees. In this question, I don't necessarily equal attained education with received degrees but rather with actual acquired knowledge, including knowledge gained through non-institutional education. I realize we need quantifiable ways to measure educational attainment and awarded degrees is one of them. Though imperfect, it is better than non-existent. One just has to be careful about interpreting what exactly that number tells us. It also begs the question: What is the best way to measure acquired knowledge? In case there is a trend of a growing educational gap, what concerns me is the possible emergence of an educational divide. Depending on the definition of "educational divide" and high-quality data available, such divide might potentially be underway. submitted by /u/akuataja [link] [comments]

If camera lenses are circular, why do they produce a rectangular image? Posted: 04 Feb 2018 03:43 AM PST submitted by /u/TitaniumTurbine [link] [comments]

Do you sweat if you are submerged in hot water? Posted: 03 Feb 2018 05:44 PM PST submitted by /u/Dustypawous [link] [comments]

Everyone knows how the CO2 cycle works, but how does methane cycle work? Posted: 04 Feb 2018 05:39 AM PST submitted by /u/SEND_NOODELS [link] [comments]

is it possible for multiple planets to share the exact same orbit? Posted: 04 Feb 2018 03:13 AM PST if so, have we found examples of such? submitted by /u/mfairview [link] [comments]

What was the largest landmass or land feature discovered by satellite? Posted: 03 Feb 2018 04:31 PM PST Inspired by a question in /r/AskHistorians which asked whether there was land discovered by satellite imagery, I'm curious as to what the largest landmass or land feature discovered by satellites may be. I was unable to turn up anything via Google Scholar, though maybe my Google-fu is insufficient. Landsat Island (25m x 45m = 1,125m2) is the only one I can find that is apparently notable. submitted by /u/Hydrazeen [link] [comments]

How did people think stars work in the run up to the discovery of nuclear fusion and energy? Posted: 03 Feb 2018 06:41 PM PST submitted by /u/tectoo [link] [comments]

Why does the far side of the moon look so different than the near side of the moon (none of the characteristic dark splotches)? Posted: 03 Feb 2018 05:56 AM PST Just saw this cool gif of the moon, and it struck me how different the near side of the moon (that we see from Earth) looks from the far side. The dark splotches that make up the "man in the moon" seem largely absent from the far side. I've since learned that the "splotches" are called Lunar Maria and are formed from ancient lava flows, but I haven't stumbled across any explanation why they all face one side. Do we have any strong scientific explanation or theories why the Lunar Maria all face the Earth? submitted by /u/FroodLoops [link] [comments]

Does light really make one lightyear per year, even though space is expanding? Posted: 04 Feb 2018 01:25 AM PST Let's say we had a star 1 mio lightyears away. While its light travels to us, the space itself in between is expanding, so the light has to travel a longer distance. Technically, the light therefore should take more than 1 mio years to reach us, even if the star was exactly 1 mio lightyears away originally. Am i correct or do i miss something? submitted by /u/Morpfium [link] [comments]

Would there be any advantage to making an interstellar spacecraft "aerodynamic" since there is no air? Is there an alternate concept of "vacudynamic" design which would provide benefits? Posted: 03 Feb 2018 04:34 PM PST submitted by /u/DweadPiwateWoberts [link] [comments]

How does your brain react to a Missing/failing organ? Posted: 03 Feb 2018 07:53 PM PST submitted by /u/Jumpingeal [link] [comments]

Is the ideal human weight based on calculated averages, or is it based on observable evidence that the body performs its best at a certain weight? Posted: 03 Feb 2018 07:31 PM PST submitted by /u/workerlurker [link] [comments]

Homo sapiens' nearest relatives live in hierarchical bands, but hunter-gatherer bands are egalitarian. Most agricultural societies are hierarchical. Was the reemergence of hierarchy cultural or did farming allow for the reappearance of previously culturally supressed hierarchical instincts? Posted: 03 Feb 2018 08:53 PM PST Or, do dominance hierarchies actually exist in hunter-gatherers, but without aspects we would otherwise associate with hierarchy e.g. socially dominant individuals exist but without the coercive power to take extra food, or extra mates, etc? submitted by /u/Seswatha [link] [comments]

Does frosted glass let in less light than clear glass? If so, why? Posted: 04 Feb 2018 05:41 AM PST submitted by /u/wilsghost [link] [comments]

How did quantum physicists come to the conclusion that phenomena like radioactive decay has no cause rather than concluding that there's an unknown, random-like variable causing it? Posted: 03 Feb 2018 12:04 PM PST I'm majoring in philosophy of science and this leap from determinism to probabilistic-determinism is amazing but I'm having trouble understanding the need to make that leap. I'm trying to understand how scientists were able to weigh the likelihoods of the two competing philosophies. One claims a cause is probably there somewhere (albeit inductively) but is observationally random. The other claims, against all prior experience, a cause is not needed (and according to some people, not possible according to accepted quantum theory). Also, how is the situation different from dark matter and dark energy - cases where we don't know the cause of observed phenomena, yet declared and labeled the causes as unknown variables rather than uncaused phenomena? I've been told to look into John Bill's "No Go Theorem" and also something to do with experiments in optics or light, but never had it actually explained. Thanks! submitted by /u/Seraphrawn [link] [comments]

Why do some microorganisms look like bugs or insects? Is there any correlation between them? Posted: 03 Feb 2018 05:28 PM PST submitted by /u/Johhnzzy [link] [comments]

Are there any examples of animals 'practising' an ability, in the way we as humans do? Posted: 03 Feb 2018 05:22 PM PST In the sense that certain humans feel the desire to become increasingly proficient in an ability - performing a musical instrument, athletics, video games, etc. I suppose the question I'm asking is - is practising some personal ability, something we have developed due to our intelligence (or a consequence of it), or is it 'instinctive'? submitted by /u/sevenhours37 [link] [comments]

How do we detect new, exotic, stable particles in the LHC and other similar colliders? Posted: 03 Feb 2018 12:59 PM PST submitted by /u/ClassyAmoeba [link] [comments]

How is Digestibility Determined or Measured? Posted: 03 Feb 2018 07:50 PM PST I see foods or diets say something is more digestible or easier to digest all the time. What is being measured here? Is it lower incidence of complaints? Speed through GI tract? Fecal volume? Just marketing? Very curious what this means, scientifically. submitted by /u/dza76wutang [link] [comments]

What are the fastest mass-having things in the universe? Posted: 03 Feb 2018 02:22 PM PST this xcd was motivation behind the question https://what-if.xkcd.com/1/ submitted by /u/ti-83calcmastrrc [link] [comments]

Human eyes have evolved to be able to see in a wide range of light intensity, have different parts of the world evolved slightly different from another according to their specific need? Posted: 03 Feb 2018 03:45 PM PST In the sense that back in time a few millennia and beyond, some group of people living in a place that is primarily cold would have no as much use for their eyes to be able to see with dim lunar reflection light as they would not venture out much, as opposed to some group of people who lives in a much wormer place and can use the advantage of seeing properly in dim light for night hunting or so? Other reasons around those lines or completely different ones as to ask if there is any clearly defined group of people geographically or ethnicly (if thats a word) that has a different "range" of light they can see properly in? If yes or no, is there another clear example of different group of people having different a slightly vision characteristics compared to another group? submitted by /u/mrsievert [link] [comments]

Why does Hawking Radiation result in loss of mass, and why does the loss of mass speed up as the black hole get's smaller? Posted: 03 Feb 2018 04:30 PM PST So, my understanding is that Hawking Radiation is when a pair of particles spawn into existence where one is outside the event horizon of a black hole and the other is inside. The outside one shoots off into space resulting in Hawking Radiation. But what happens to the one on the inside? Since it's essentially captured by the black hole, why doesn't it add to its mass? Also, I've heard that Hawking Radiation speeds up over time, resulting in tiny black holes 'exploding' out of existence (I think i saw this on a MinutePhysics video). But it seems to me the opposite would happen. The larger the black hole, the more surface area its event horizon has, and the more chances for the particle pairs to be created with one on the inside, and one on the outside. What am I missing? submitted by /u/VegasTamborini [link] [comments]

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