From the interior of the International Space Station, would you be aware you are in constant motion? Are things relatively static or do they shudder and shake like a train cabin might? |
- From the interior of the International Space Station, would you be aware you are in constant motion? Are things relatively static or do they shudder and shake like a train cabin might?
- AskScience AMA Series: I am Pablo Sobron, research scientist for SETI Institute and founder of Impossible Sensing. I specialize in remote sensing and robotic exploration of the solar system. AMA!
- How did people do spacewalks from these small crew capsules without losing their air?
- Do square roots follow this rule?
- How is CO2 so significant?
- What separates the nerves of the glans of a penis from any other nerve?
- Why do colds and the flu spike in winter?
- Why are Archaea so hard to cultivate in the lab?
- What does the ISS do during meteor showers?
- How long does it take for every cell of an organism to die after brain-death?
- Why does Kerosene (No. 1 Diesel) ignite but No. 2 Diesel Fuel has to be atomized first?
- Why are space walks so hard?
- How does the air inside of a tire (or other rotating body) behave? Are different zones of air pressure created throughout the tire, or does the air remain evenly spaced?
- What is near-field light and how does it allow microscopes to see things smaller than the light wavelength?
- How do scientists know whether the covid vaccine actually works? Can't they simulate the results before they inject it to people?
- Can antibodies be transferred through sexual contact?
| Posted: 13 Aug 2020 08:49 PM PDT |
| Posted: 14 Aug 2020 04:00 AM PDT I have strong interests in robotic space exploration and comparative analogue science - the study of places on Earth that are similar to environments on other planets and moons. Over the past fifteen years, I've logged 3,000+ field work hours all over the world, including work in the Arctic, Antarctic, and desert environments, where I've tested and performed scientific investigations with multiple prototypes of planetary exploration instruments on board European Space Agency, Canadian Space Agency, and NASA missions. Some of the technologies developed by my team include one of the world's most advanced ocean exploration platforms in NASA's toolbox, an underwater robot to explore extraterrestrial oceans, and the most sensitive laser Raman spectroscopy sensor currently under development for NASA, a first in class instrument that can detect traces of extinct and extant life in planetary surfaces.
I will be on at 11am PDT (2 PM ET, 18 UT), AMA! Username: setiinstitute [link] [comments]  |
| How did people do spacewalks from these small crew capsules without losing their air? Posted: 14 Aug 2020 03:58 AM PDT At the time where people started to go to space they made these small spacewalks from the crew capsules but how did they do that? I think they needed some kind of airlock so they don't lose their air but how does an airlock fit inside these small capsules? Or did they just had a tank of air to fill the vacuum after the spacewalk? I'm sorry if my sentences sound wierd. English is not my first language but I hope you understand what I mean. Understanding it is easier than writing. I also didn't know what flair to use for my question because there was none for spaceflight or something similar so I just used the Physics one [link] [comments]  |
| Do square roots follow this rule? Posted: 13 Aug 2020 08:26 PM PDT Based on observation, it seems to me that the square root of any positive integer is always either another positive integer or is irrational. Is this true? Has it been proven? Is there a simple explanation for understanding why it is true (or not). [link] [comments]  |
| Posted: 14 Aug 2020 03:47 AM PDT I do believe in global warming and that it is caused by CO2 emissions. But I happened to get into a word dispute with some climate skeptics, and they laid forth this argument I will share here: Water vapor already reflects and scatters 100 % of the infrared wavelength that CO2 reflects and scatters 100 % in, that water already is a much more effective greenhouse gas and that it also is 40 times more potent. So, easy put, water already reflects the infrared radiation that CO2 would reflect. So I wonder what makes CO2 so significant, how does it matter when water vapor already does what CO2 is supposed to do? What makes CO2 more significant than water vapor? [link] [comments]  |
| What separates the nerves of the glans of a penis from any other nerve? Posted: 14 Aug 2020 05:45 AM PDT I was thinking about this the other day while browsing some extra curricular sites - and it got me thinking: Why does the penis feel good in comparison to something more innocuous, like say - the nerves on someone's chest. Is this an assigned quality of that particular nerve - or all nerves born equal, but with varied sensitivity? Like is there some kind of construction foreman during fetal development who's directing things and dictates 'Ok.. that's the penis - feel good nerves here!' And if that is the case, could it be theoretically possible to duplicate these nerves and wire them elsewhere? It would be nice to be able to trigger orgasms by doing something more discrete, like scratching my arm or something. [link] [comments]  |
| Why do colds and the flu spike in winter? Posted: 14 Aug 2020 05:03 AM PDT I would assume that warmer weather would be great for viruses and bacteria however the peaks sick season is in winter. Why is this? Thanks [link] [comments]  |
| Why are Archaea so hard to cultivate in the lab? Posted: 14 Aug 2020 06:25 AM PDT I find the archaea very fascinating, being a whole different domain of prokaryotes and possibly being the ancestor of eukaryotes. One thing that is apparent from my casual reading though is that compared to bacteria we know very little about the archaea. Some of that seems to come from a combination of them only being 'discovered' four decades ago and having less impetus to study them (e.g. since they're not pathogens of humans). But something that seems to come up often is that a lot of archaea are poorly documented because they cannot be cultivated the way most bacterial can. Why is that? Sure, some are extremophiles but it can't be that hard to sustain an artificial high pressure/acid/temperature/whatever environment. And it seems an increasing number of them are being discovered in non-extreme conditions like the ocean. So, what is the reason behind the cultivation of archaea being such a lagging field? What sort of obstacles need to be overcome? [link] [comments]  |
| What does the ISS do during meteor showers? Posted: 14 Aug 2020 05:51 AM PDT I was watching the Perseids the other day and was blown away. Some of the meteors streaked across as much as 20-30% of the sky and some left long visible trails, which I imagine means they were probably quite big. How does the ISS avoid disaster when we move through these debris fields? [link] [comments]  |
| How long does it take for every cell of an organism to die after brain-death? Posted: 14 Aug 2020 04:12 AM PDT I know there are extreme cases where an organism either has no brain or can function for a long time without one. What I mean is, for an example, how long would it take for complete cell death in humans after decapitation? [link] [comments]  |
| Why does Kerosene (No. 1 Diesel) ignite but No. 2 Diesel Fuel has to be atomized first? Posted: 14 Aug 2020 01:37 AM PDT |
| Posted: 13 Aug 2020 05:57 PM PDT |
| Posted: 13 Aug 2020 12:42 PM PDT |
| Posted: 13 Aug 2020 08:22 AM PDT |
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| Can antibodies be transferred through sexual contact? Posted: 13 Aug 2020 12:25 PM PDT I had COVID19 months ago (March) and tested positive for the antibodies (May). My boyfriend just tested positive for antibodies even though he never had any symptoms. We had zero contact while I was sick (and for a while after). I will ask him which test it was to check sensitivity/specificity levels, to see what the likelihood of a false positive is. Until I can do that, I'd like to know if I could have transmitted antibodies to him through sexual contact. [link] [comments]  |
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