How far apart are stars in galactic star clusters? |
- How far apart are stars in galactic star clusters?
- Why don't substances like hydrogen occasionally combust at 'low' temperatures due to the long tail of fast moving molecules?
- Are there any known examples of human DNA that has been permanently modified by a past virus?
- Why aren't bacterial pandemics as common as viral epidemics?
- Why do our brains have wrinkles on them? Are they just like that or is it for some purpose?
- How do plants not all go extinct during an ice age?
- Would a large asteroid impact, such as the Chicxulub Crater, affect plate tectonics, if at all?
- Apart from the theory that blood type may affect the severity of COVID-19, are there any known advantages or disadvantages of having a certain blood type, healthwise?
- What are the current scientific insights on why the scale of atoms vs nuclei are the way they are?
- Why is the presence of Cadmium in cigarettes a problem when foods such as carrots contain similar trace amounts?
- Is there a scientific consensus on fracking?
- In the U.K., they are talking about injecting people with the Coronavirus, how is this done?
- Does Viral Replication within host cell (e.g. SARS-CoV-2 because of this pandemic, but my question is more general) produce the same viruses (like products of a factory) or there are difference/s between the resulting viruses?
- Do bird songs evolve at all?
- Why do we ask people exposed to coronavirus to self-quarantine for 14 days? Why not 10 days? Why not 21 days?
- Are there "Newtonian" Fluids?
- How do the energy costs of AC scale with how hot the outside air is (e.g. 100 F vs 110F)?
- Why do look different on camera than in the mirror?
- Why do we have a conventional name and scientific name for every species?
| How far apart are stars in galactic star clusters? Posted: 24 Oct 2020 05:58 AM PDT Today on APOD (the Astronomy Picture of the Day - https://apod.nasa.gov/apod/astropix.html), there was a picture posted of a cluster of stars in our galaxy. The clump is, according to the article, about 120 light years across with hundreds of thousands of stars. Some of these stars must be really, really close together. So the question is how close together are most of these stars? Do they attract each other enough to form binaries (or more)? How do they not just all clump together? And why are there star clusters like this? Thanks. [link] [comments]  |
| Posted: 24 Oct 2020 05:12 AM PDT If hydrogen starts to combust immediately at 900K why doesn't it eventually start to combust at lower temperatures, say 300K. Is it just incredibly unlikely that any molecule would be moving fast enough, or is there some other factor that determines when molecules react other than the kinetic energy with which they approach each other? [link] [comments]  |
| Are there any known examples of human DNA that has been permanently modified by a past virus? Posted: 24 Oct 2020 08:08 AM PDT Is there any indication that our modern human DNA has been modified by past viruses to become what it is today? [link] [comments]  |
| Why aren't bacterial pandemics as common as viral epidemics? Posted: 23 Oct 2020 03:21 PM PDT It seems as though any modern epidemics or pandemics with importance are caused by viruses (like the Swine Flu, the Spanish Flu, HIV/AIDS, COVID), but the only bacterial epidemic I can think of is the Bubonic plague. Is there any reason for the lack of bacterial pandemics, or am I just forgetting some that have occurred? [link] [comments]  |
| Why do our brains have wrinkles on them? Are they just like that or is it for some purpose? Posted: 24 Oct 2020 04:00 AM PDT |
| How do plants not all go extinct during an ice age? Posted: 24 Oct 2020 01:58 AM PDT |
| Would a large asteroid impact, such as the Chicxulub Crater, affect plate tectonics, if at all? Posted: 24 Oct 2020 01:39 AM PDT |
| Posted: 23 Oct 2020 07:04 PM PDT |
| What are the current scientific insights on why the scale of atoms vs nuclei are the way they are? Posted: 23 Oct 2020 05:31 PM PDT Another way of getting at the same thing .. what parameters being different would say have a universe where lets say the electron cloud of a hydrogen atom shrinks half-way closer to the nucleus or twice as far out .. [link] [comments]  |
| Posted: 23 Oct 2020 12:32 PM PDT I found one article says that the average cigarette contains 1.56 to 1.96 μg/cigarette. The same article shows (with a very strict p-value!) that cadmium blood concentrations are higher in smokers. In another article, it says that control group wet carrots contains 4 μg/kg Many grown foods contain trace amounts of Cadmium from the soil, so it is not unreasonable to assume that smokers and healthy eaters consume Cadmium on a similar order of magnitude. So what makes the cigarette Cadmium that more dangerous than carrot Cadmium? Why do cigarette users have higher blood levels of Cadmium? [link] [comments]  |
| Is there a scientific consensus on fracking? Posted: 23 Oct 2020 10:35 AM PDT I hear a lot of people telling me to "listen to the scientists." What are the scientists saying about fracking? [link] [comments]  |
| In the U.K., they are talking about injecting people with the Coronavirus, how is this done? Posted: 24 Oct 2020 01:24 AM PDT |
| Posted: 23 Oct 2020 05:42 PM PDT I'm thinking about efficiency of the generated viruses with respect to each other. And therefore thinking of some viruses that can enter the body and repelled without infection because of low efficiency. [link] [comments]  |
| Posted: 23 Oct 2020 09:11 AM PDT |
| Posted: 23 Oct 2020 10:02 AM PDT |
| Posted: 23 Oct 2020 05:53 PM PDT If a non-Newtonian fluid is a liquid that changes it's viscosity under impact pressure, or Shear pressure as I've heard it's called, is there a liquid that ignores this rule? [link] [comments]  |
| How do the energy costs of AC scale with how hot the outside air is (e.g. 100 F vs 110F)? Posted: 23 Oct 2020 08:55 AM PDT |
| Why do look different on camera than in the mirror? Posted: 23 Oct 2020 08:05 AM PDT |
| Why do we have a conventional name and scientific name for every species? Posted: 23 Oct 2020 04:45 PM PDT If we already have more easily understandable names for all the species, why do we have the Latin equivalent too? [link] [comments]  |
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