the ISS is a pretty well closed system. Every astronaut has brought their own microbiome, do we know anything about what they leave behind and what survives? |
- the ISS is a pretty well closed system. Every astronaut has brought their own microbiome, do we know anything about what they leave behind and what survives?
- Why does a phase to phase electrictrical contact result in an explosion?
- It is estimated that there are between 1-10 quadrillion ants on Earth. How did we come to that number?
- What's the average gap distance between current collectors in Supercapacitors?
- Do protons and neutrons have the same mass, or are they slightly different?
- What do the "L-", "D-", "R-" and "S-" prefixes for molecules mean?
- Why does depth of field in cameras decrease with an increase in aperture?
- Are there any male-specific consequences of being underweight?
- The human heart is asymmetrical, which is why it is felt more easily on the left side of the chest (fairly consistently in humans). During fetal development, what signals do the individual cells use to "know" which side is left vs. right while differentiating to make the organ?
- Does the spin of all the particles in an atom's nucleus face the same way? If so, does this also affect the electrons?
- How does blowing on something cool it off? Is it different for solids vs liquids or is the overall premise the same?
- Do mosquitoes have a preferred blood type?
- After light slows traveling through a medium, does it accelerate back to c upon reentering a vacuum or does it remain the same velocity as it was the moment it exited the medium?
- If there are so many satellites and more orbiting around the earth, how can we ensure that they not collide?
- How does the perception of spice scale?
- Why do clear plastics turn milky white when twisted or bent?
- If the theory is that Life On Earth started with some primordial chemical reactions accidentally triggered, then is it possible that in the billions of years that have passed we have had this happen again and we have multiple roots for life?
- How do gut microbes get passed from mother to child if the microbes live in the intestines and the baby passes through the vagina?
- What are the advantages/disadvantages for an organism to having a small or a large number of chromosome pairs?
- How many planets have we found like earth? And how many of them are in a good distance for us?
| Posted: 29 Nov 2018 10:41 AM PST It would be pretty cool to know which strains of microflora were brought aboard & by whom. I would imagine some stick around for a long time & some disappear as soon as a particular astronaut leaves. Is the air and dust in the ISS just as alive and diverse as on earth? If you took all the people out of the ISS what would the ecosystem look like? If you left food out would one or two strains ultimately dominate or would there be constant flux? I'm just curious about what microflora might do on a spaceship. Is every nook and cranny going to be overgrown with fungus after 10 years? I'd love to hear any speculation, wild or not. Thanks askscience [link] [comments]  |
| Why does a phase to phase electrictrical contact result in an explosion? Posted: 30 Nov 2018 06:07 AM PST I'm looking for the actual physics of why this occurs. In regards to a three phase system, when you connect A and B phase, or B and C or A and C this results in an explosion in the transformer. Why is that? [link] [comments]  |
| Posted: 29 Nov 2018 09:24 PM PST |
| What's the average gap distance between current collectors in Supercapacitors? Posted: 30 Nov 2018 08:06 AM PST Studying various high capacitance Supercapacitor designs, it seems that the area of the electrode plates are large, and the gap-distance between those elements are quite small, however, what is the average gap-distance measured to be? Some source cite it to be "order of a few ångströms" or a few micrometers. To clarify: The gap distance "d" is the same variable used in the capacitance equation, the distance between the two plates. [link] [comments]  |
| Do protons and neutrons have the same mass, or are they slightly different? Posted: 30 Nov 2018 05:45 AM PST Because in beta decay, a neutron is converted to a proton and an electron, so I thought they might be different. Also, as a follow-up, is the mass of a proton plus the mass of an electron equal to the mass of a neutron or are there other particles in play? [link] [comments]  |
| What do the "L-", "D-", "R-" and "S-" prefixes for molecules mean? Posted: 30 Nov 2018 04:15 AM PST for example, there is L-lactic acid and D-lactic acid, and I don't understand what the difference between the two is [link] [comments]  |
| Why does depth of field in cameras decrease with an increase in aperture? Posted: 29 Nov 2018 08:22 PM PST |
| Are there any male-specific consequences of being underweight? Posted: 29 Nov 2018 04:15 PM PST Most websites talk about the deleterious effects of being underweight on women - such as irregular menstruation and decreased bone density - but I was wondering how much of the health consequences of being underweight in women overlaps with men, and if there are any male-specific consequences of being underweight. Or are there no male-specific consequences of being underweight? [link] [comments]  |
| Posted: 29 Nov 2018 07:41 PM PST I've been thinking about this topic, and it makes sense how cells can "know" (please excuse the terminology) up from down, as there is gravity. However, in making asymmetrical organs such as the heart, how do the cells distinguish left from right before differentiating to develop the organ? [link] [comments]  |
| Posted: 29 Nov 2018 10:34 PM PST |
| Posted: 29 Nov 2018 06:36 PM PST |
| Do mosquitoes have a preferred blood type? Posted: 29 Nov 2018 10:19 AM PST I'm asking because I'm usually the one in my dorm that gets surrounded by mosquitoes while my friends are relatively better off. Is it because of my blood type or does body odor has something to do with it? [link] [comments]  |
| Posted: 29 Nov 2018 11:51 AM PST |
| Posted: 29 Nov 2018 09:40 AM PST |
| How does the perception of spice scale? Posted: 29 Nov 2018 01:12 PM PST With the YouTube show Hot Ones, the host and guest eat increasingly spicier wings as the interview goes on. Why does it seem that the 100k-300k Scoville range hits much harder than the 1m-2m Scoville range? [link] [comments]  |
| Why do clear plastics turn milky white when twisted or bent? Posted: 29 Nov 2018 02:18 PM PST Like when you twist a plastic water bottle and it turns that milky whitish color, why is that? [link] [comments]  |
| Posted: 29 Nov 2018 07:13 AM PST |
| Posted: 29 Nov 2018 09:25 AM PST Wouldn't it be different microbes in the vagina vs the gut? If not, why/how do those same microbes get to the vagina? I understand that sometimes the mother defecates during pregnancy and that sometimes this is a method of inoculation, but seems like it doesn't always happen [link] [comments]  |
| Posted: 29 Nov 2018 09:54 AM PST |
| How many planets have we found like earth? And how many of them are in a good distance for us? Posted: 29 Nov 2018 10:00 AM PST |
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