Why do astronauts breathe 100% oxygen? |
- Why do astronauts breathe 100% oxygen?
- If the moon also rotates on its axis,why is it said that we can never view its other side?
- How exactly does the CMB cover the universe?
- What do I see when I look at the night sky. Just Planets? Stars? Both?
- If we can only see objects if the reflected light enters out eyes (or a camera), then how did we capture the image of the black hole if light itself cannot escape it?
- How does the plate movement work?
- How did tropical storms/hurricanes in the Panthalassa Ocean (the massive ocean surrounding the super continent Pangea) compare to storms today?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- Why are so many computer gpus filled with completely different cooling fans? Don't we know the optimal shape and number of fins by now?
- Is synesthesia documented in non-human primates or other mammals?
- Maltodextrin has a higher glycemic index than glucose. How is it possible that Maltodextrin is absorbed and converted to glucose faster than consuming straight glucose?
- Why is the rabies virus contagious between humans and animals, but very rarely contagious between humans and humans?
- How can you predict if 2 plant species will hybridize if cross pollinated?
- How do tech companies such as Twitter determine an account is fake and associated with a specific radical group or foreign state?
- How does the eye differentiate between light coming from a close object, and light coming form a distant object?
- How much does genetics play a role in pet allergies?
- Does birdsong contain information beyond "I'm here"?
- Is it true that psychology no longer uses the distinction between hallucinations and delusions, and why? Is it true that psychology no longer uses the distinction between organized and disorganized schizophrenia, and why?
- Why the long period of antibiotics?
| Why do astronauts breathe 100% oxygen? Posted: 02 Sep 2020 03:45 AM PDT In the Apollo 11 documentary it is mentioned at some point that astronauts wore space suits which had 100% oxygen pumped in them, but the space shuttle was pressurized with a mixture of 60% oxygen and 40% nitrogen. Since our atmosphere is also a mixture of these two gases, why are astronauts required to have 100-percent oxygen? [link] [comments]  |
| If the moon also rotates on its axis,why is it said that we can never view its other side? Posted: 01 Sep 2020 11:38 PM PDT |
| How exactly does the CMB cover the universe? Posted: 02 Sep 2020 01:45 AM PDT I've read that the CMB reads the background radiation from the Big Bang without any of the planets of galaxies being in the way. Is that true? How does the CMB give us this complete layout of the universe(of what we can see atleast) without all the galaxies and other things getting in the way and giving false information? If a planet is in the way wouldn't it askew the reading for everything behind it as well? [link] [comments]  |
| What do I see when I look at the night sky. Just Planets? Stars? Both? Posted: 02 Sep 2020 02:22 AM PDT I just don't know what those thousands observable twinkling stars are. I always wondered. Are those all Stars with their own planets orbiting them? Or just planets like Earth? [link] [comments]  |
| Posted: 01 Sep 2020 09:09 PM PDT |
| How does the plate movement work? Posted: 02 Sep 2020 05:30 AM PDT In a few million years will north Americas west coast and Asia's East coast join together due to the plate movement or will it stay as it is now? [link] [comments]  |
| Posted: 01 Sep 2020 11:55 AM PDT Most large hurricanes that hit North America form from hot, dry air rising over the Sahara desert that mixes with cool, wet air above the Atlantic Ocean. The rising destructive power of these storms has been nearly universally a result of climate change/global warming. In comparison, during the formation and dismantling of Pangea, huge amounts of volcanic activity pushed environments to extremes, with CO2, CH4, NO2, and cyanides contributing to a massive greenhouse gas effect (thought to be a major reason for the mass extinction that took place and led to the rise of the dinosaurs) (Source: https://phys.org/news/2013-11-biggest-mass-extinction-pangea.html ). So how did both the size of the Panthalassa Ocean and extreme climates impact the size of such tropical storms? Were they bigger or smaller? Why? [link] [comments]  |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 02 Sep 2020 08:09 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Biology, Chemistry, Neuroscience, Medicine, Psychology 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! [link] [comments]  |
| Posted: 01 Sep 2020 03:02 PM PDT |
| Is synesthesia documented in non-human primates or other mammals? Posted: 01 Sep 2020 07:38 AM PDT |
| Posted: 01 Sep 2020 07:50 AM PDT |
| Posted: 01 Sep 2020 04:35 PM PDT |
| How can you predict if 2 plant species will hybridize if cross pollinated? Posted: 01 Sep 2020 07:50 AM PDT How can you predict if 2 plant species will hybridize if cross pollinated? I ofteb see chromosome number Xn being quoted (however I am not sure which chromosome number should that be), however I would like to know what is a good predictor variable. Thank you [link] [comments]  |
| Posted: 01 Sep 2020 11:49 AM PDT |
| Posted: 01 Sep 2020 07:25 AM PDT Curious since I'm short-sighted. I get that the lens in the eye has to contract or opposite to focus the light, but that understanding goes away from me when two objects with two different distances from the eye have different clarity even when they take up the same amount of field of view.. Say a car at a distance will appear blurry when a pencil at close range appear sharp, even though they take up the same amount of area in my sight. [link] [comments]  |
| How much does genetics play a role in pet allergies? Posted: 01 Sep 2020 07:48 AM PDT Does anyone knows more about pet allergies and what genes cause them? I just find it incredibly odd that when I was a kid I had moderate to severe asthma and then I outgrew it around age 7. I had friends who had plenty of dogs and cats around and I didn't have any issues with their pets. My immediate family however, mom, dad, and older sister are all allergic to dogs and cats and none of them had asthma. Any thoughts or is this just a really obscure question? [link] [comments]  |
| Does birdsong contain information beyond "I'm here"? Posted: 31 Aug 2020 09:08 PM PDT It seems crazy to me to extend that amount of energy and have such consistently slight variation (thinking about robins in particular but also blue jays) to have it not encode information more rich than "hi it's me" over and over [link] [comments]  |
| Posted: 31 Aug 2020 10:38 PM PDT 2 questions:
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| Why the long period of antibiotics? Posted: 31 Aug 2020 07:46 PM PDT Why do we have a long period of antibiotics as opposed to having one big dose and getting it over with? [link] [comments]  |
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