How do scientists actually know what material the Earth's core is made out of? |
- How do scientists actually know what material the Earth's core is made out of?
- The US Military has started human trials of a Spike Ferritin Nanoparticle COVID vaccine. How is this different from other types of vaccines?
- In an explosive volcanic eruption (like the one yesterday on St Vincent - link in comment) - what do the different layers in the ash cloud tell us about the nature of the eruption?
- What is the reason for uracil being used in RNA?
- Why do passengers in a jet plane not hear the jet engines as loudly as someone on the ground does?
- Why do peanuts cause anaphylaxis?
- How is there so much basalt in the continental United States while lava flows are so rare?
- Do these studies indicate some sort of precognition?
- If Jupiter shares it’s orbit with the Trojan Asteroids, why is Jupiter a planet while Pluto isn’t?
- How do immunotherapy shots for allergies work?
- How do the electric signals from the brain turn into movement?
- If copper has an idle anti-microbial effect over time, why is it not a popular choice for the interior walls of swimming pools, water storage containers, etc.?
- Why do most viral diseases do not have direct treatment?
- Is it possible that many of the stars we see are actually “echoes” of other stars from longer ago, with their light having circled the Universe?
- Why do exchange reactions occur when mixing aqueous solutions?
- Does the “you can’t spread COVID once vaccinated” apply to j&j?
- When and how was the smallpox virus discovered?
| How do scientists actually know what material the Earth's core is made out of? Posted: 09 Apr 2021 05:30 PM PDT I remember in school learning that the core of Earth is made from mostly iron and nickel. ...how did we get that particular information? I can wrap my mind around the idea of scientists figuring out what the inside of the Earth looks like using math and earthquake data but the actual composition of the center of the Earth? It confuses me. What process did we use to figure out the core is made out of iron and nickel without ever obtaining a sample of the Earth's core? EDIT: WOW this post got a lot of traction while I slept! Honestly can't wait to read thru all of this. This was a question I asked a couple of times during my childhood and no teacher ever gave me a satisfying answer. Thank you to everyone for taking the time to truly explain this to me. Adult me is happy! :) [link] [comments]  |
| Posted: 10 Apr 2021 05:51 AM PDT https://clinicaltrials.gov/ct2/show/NCT04784767 I'm having difficulty researching the tech used in this vaccine. Is this different from the mRNA vaccines? Does this type of vaccine have a research history similar to mRNA vaccines? Is it a brand new tech or over 20 years of research like the mRNA viruses have? Walter Reed Hospital believes this will have a wide application against many variants and different types of spikes used by coronaviruses. How wide are we talking? If I could never get another cold for the rest of my life, that would be great. I read this community frequently. Thanks for all that you guys do! [link] [comments]  |
| Posted: 10 Apr 2021 05:23 AM PDT Here's a link to a post with an example: https://www.reddit.com/r/natureismetal/comments/mnubo4/eruption_happening_in_st_vincent_today/?utm_source=share&utm_medium=ios_app&utm_name=iossmf [link] [comments]  |
| What is the reason for uracil being used in RNA? Posted: 10 Apr 2021 07:20 AM PDT The reason I keep reading online is that cytosine can spontaneously deaminate to produce uracil, so it is useful for DNA to have uracil instead of thymine, as it makes the detection and repair of DNA mutations much easier if they are able to distinguish cytosine from thymine. But my question is, doesn't this same logic apply for RNA? Can't the cytosine in RNA spontaneously deaminate too, causing issues for repair? Wouldn't it make more sense then for RNA to use thymine instead of uracil? [link] [comments]  |
| Why do passengers in a jet plane not hear the jet engines as loudly as someone on the ground does? Posted: 09 Apr 2021 07:49 PM PDT |
| Why do peanuts cause anaphylaxis? Posted: 09 Apr 2021 05:14 PM PDT Not the symptoms, or treatments, but specifically what is the cause of the reaction? I cant find or am blind as to the cause on google. Example. THC causes the reaction we see and feel. What is it about peanuts? [link] [comments]  |
| How is there so much basalt in the continental United States while lava flows are so rare? Posted: 09 Apr 2021 09:57 PM PDT I have seen a crap load of basalt but I can only think of two lava flows that have happened in human history here and both were very small. [link] [comments]  |
| Do these studies indicate some sort of precognition? Posted: 09 Apr 2021 08:42 PM PDT Recently I've found a few studies that evaluated a phenomenon called "Predictive Anticipatory Activity", that found that subjects' nervous systems unconsciously responded to unpredictable, random stimuli (e.g. neutral, emotional, arousing, etc) up to 10 seconds before said stimuli take place. Here is a meta-study that found the effect to be repeatable and statistically-significant. I don't have any experience in the field, but as a layman there doesn't seem to be anything obviously wrong with the studies. Obviously, this result seems extremely weird. What possible explanation can there be for this? Is there a clear flaw with the study? [link] [comments]  |
| If Jupiter shares it’s orbit with the Trojan Asteroids, why is Jupiter a planet while Pluto isn’t? Posted: 10 Apr 2021 01:08 AM PDT |
| How do immunotherapy shots for allergies work? Posted: 09 Apr 2021 11:33 PM PDT I'm going through it, I've got one dose of it.. and I know that they make my body more okay with the stuff they're injecting me (sorry I'm bad at science so that's the best way I can word it) but how do the change my body at a cellular level so that it doesn't freak out anymore when I eat fruits and peanuts and breathe pollera etc? [link] [comments]  |
| How do the electric signals from the brain turn into movement? Posted: 09 Apr 2021 05:14 PM PDT How are those electric signals transported (why is this possible to occur inside a biological tissue), and how those signals are "interpreted" by the cells in muscles? [link] [comments]  |
| Posted: 09 Apr 2021 08:10 PM PDT Would it not make a lot of sense to take a swimming pool for example and construct the interior walls completely out of copper? Does the copper lose its anti-microbial power too fast? How long does that effect last? Does the copper corrode or rust in the water? Does something happen that makes it no longer safe to be in or drink? [link] [comments]  |
| Why do most viral diseases do not have direct treatment? Posted: 09 Apr 2021 04:34 AM PDT Unlike bacterial diseases can be treated by antibiotic, most viral diseases like SARS and covid-19 are treated with supportive treatment only, why? [link] [comments]  |
| Posted: 09 Apr 2021 09:53 AM PDT |
| Why do exchange reactions occur when mixing aqueous solutions? Posted: 09 Apr 2021 03:41 AM PDT For example, in this precipitation reaction: Mg(NO3)2(aq) + 2NaOH(aq) -> Mg(OH)2(s) + 2NaNO3(aq) I understand that when ionic compounds dissolve they separate into ions and surrounded by water molecules. When the solutions are mixed together they react and the ions switch partners, so Mg ends up with OH and Na ands up with NO3. Why do the ions switch partners instead of just staying with their original partners? Is it because Mg(OH)2 is a solid, and if so, do exchange reactions only happen when a precipitate is formed? [link] [comments]  |
| Does the “you can’t spread COVID once vaccinated” apply to j&j? Posted: 09 Apr 2021 08:27 AM PDT The CDC says you can't spread the coronavirus once fully vaccinated, but they define fully vaccinated as two weeks after your second shot. Does this mean they are only talking about Pfizer and mederna? Or does the same apply to Johnson and Johnson? With a 70%-ish protection, if I catch COVID after getting the j&j shot, will I be contagious? Edit: I am referring to this article: https://local21news.com/news/nation-world/cdc-director-breaks-big-news-says-people-who-get-vaccinated-are-not-carrying-covid "WASHINGTON (SBG) — Centers for Disease Control and Prevention Director Rochelle Walensky said Monday that people who get fully vaccinated are not carrying COVID-19, though the CDC's guidance still suggests all people should continue wearing masks amid climbing cases. [...] She was referring to a CDC study of nearly 4,000 front-line workers who tested themselves weekly for COVID-19 infections between December and March. Only three of the fully vaccinated people in the study saw "break-through" infections. In contrast, unvaccinated participants logged 161 COVID-19 cases. This means that people who get fully vaccinated do not risk spreading the virus to other people, according to the data." [link] [comments]  |
| When and how was the smallpox virus discovered? Posted: 09 Apr 2021 04:40 AM PDT Smallpox have been with humanity for thousands of years, but when did people figure out the type of virus responsible for it? [link] [comments]  |
| You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
No comments:
Post a Comment