AskScience Panel of Scientists XXII |
- AskScience Panel of Scientists XXII
- AskScience AMA Series: We are the NASA, ALMA, and university scientists studying comets and asteroids, here to answer your questions about some of our more recent observations on comet Borisov, comet Atlas, and asteroid 1998 OR2. Ask us anything!
- Does gravity have a range or speed?
- If a big volcano was about to blow, is there anything we could do to stop it?
- Could a star have a stable ring system?
- How is the Oxford group months ahead of producing a vaccine?
- How does a vaccine help you after you got infected?
- Have any studies looked at SARS-CoV-1 - SARS-CoV-2 co-immunity?
- Is it possible to change the spin on an electron intentionally?
- Is relativistic time dilation applicable to non-relativistic speeds?
- Why are atoms of the same material usually found together in nature?
- Are seeds aware about gravity in order to know where the ground is ?
- Why would a nuclear war cause a nuclear winter rather than contribute towards global warming?
- What causes wind to happen?
- What is the Klein-Nishina formula?
- Is there an inverse cube law for a component of an electromagnetic wave?
AskScience Panel of Scientists XXII Posted: 24 Jan 2020 05:32 PM PST Please read this entire post carefully and format your application appropriately. This post is for new panelist recruitment! The previous one is here. The panel is an informal group of redditors who are either professional scientists or those in training to become so. All panelists have at least a graduate-level familiarity within their declared field of expertise and answer questions from related areas of study. A panelist's expertise is summarized in a color-coded AskScience flair. Membership in the panel comes with access to a panelist subreddit. It is a place for panelists to interact with each other, voice concerns to the moderators, and where the moderators make announcements to the whole panel. It's a good place to network with people who share your interests! You are eligible to join the panel if you:
Instructions for formatting your panelist application:
Ideally, these comments should clearly indicate your fluency in the fundamentals of your discipline as well as your expertise. We favor comments that contain citations so we can assess its correctness without specific domain knowledge. Here's an example application: Please do not give us personally identifiable information and please follow the template. We're not going to do real-life background checks - we're just asking for reddit's best behavior. However, several moderators are tasked with monitoring panelist activity, and your credentials will be checked against the academic content of your posts on a continuing basis. You can submit your application by replying to this post. [link] [comments] |
Posted: 28 Apr 2020 07:25 AM PDT Join us at today at 4 p.m. ET (20 UT) to ask anything about these enigmatic objects zipping into our view. Is Comet Borisov really from outside our solar system? How does it compare to the other interstellar visitor 'Oumuamua? What is it made of? What's causing Comet Atlas to fall apart? How close is 1998 OR2 from Earth right now? We'd love to answer your questions about these, and more!
Username: NASA [link] [comments] |
Does gravity have a range or speed? Posted: 27 Apr 2020 12:20 PM PDT So, light is a photon, and it gets emitted by something (like a star) and it travels at ~300,000 km/sec in a vacuum. I can understand this. Gravity on the other hand, as I understand it, isn't something that's emitted like some kind of tractor beam, it's a deformation in the fabric of the universe caused by a massive object. So, what I'm wondering is, is there a limit to the range at which this deformation has an effect. Does a big thing like a black hole not only have stronger gravity in general but also have the effects of it's gravity be felt further out than a small thing like my cat? Or does every massive object in the universe have some gravitational influence on every other object, if very neglegable, even if it's a great distance away? And if so, does that gravity move at some kind of speed, and how would it change if say two black holes merged into a bigger one? Additional mass isn't being created in such an event, but is "new gravity" being generated somehow that would then spread out from the merged object? I realize that it's entirely possible that my concept of gravity is way off so please correct me if that's the case. This is something that's always interested me but I could never wrap my head around. Edit: I did not expect this question to blow up like this, this is amazing. I've already learned more from reading some of these comments than I did in my senior year physics class. I'd like to reply with a thank you to everyone's comments but that would take a lot of time, so let me just say "thank you" to all for sharing your knowledge here. I'll probably be reading this thread for days. Also special "thank you" to the individuals who sent silver and gold my way, I've never had that happen on Reddit before. [link] [comments] |
If a big volcano was about to blow, is there anything we could do to stop it? Posted: 28 Apr 2020 04:37 AM PDT |
Could a star have a stable ring system? Posted: 28 Apr 2020 08:54 AM PDT I'm not talking about a proto planetary disk, I mean could a star have a ring system that is stable and will exist until the star expands and absorbs it. [link] [comments] |
How is the Oxford group months ahead of producing a vaccine? Posted: 27 Apr 2020 01:19 PM PDT I just read that one group is projecting to finish making a vaccine viable by the end of this year. Why is there such a big head start for this group and how does the scientific community go about peer reviewing the vaccine research in such a fast paced environment? Particularly considering how hundreds of millions, if not billions of doses, will be administered. [link] [comments] |
How does a vaccine help you after you got infected? Posted: 28 Apr 2020 05:38 AM PDT When you got a deep cut you always get asked if you up to date on your tetanus otherwise you get a shot. Same with rabies. How does the vaccine with an inactive version of the disease help you if you already have the live version in you? [link] [comments] |
Have any studies looked at SARS-CoV-1 - SARS-CoV-2 co-immunity? Posted: 27 Apr 2020 10:36 PM PDT Not even sure that's a word. But has anyone looked at whether someone who has recovered from SARS and would have the expected antibodies exhibited any immunity to COVID-19? Or vice-versa? [link] [comments] |
Is it possible to change the spin on an electron intentionally? Posted: 28 Apr 2020 05:06 AM PDT Edit: just clarifying change the direction if the spin (left or right) [link] [comments] |
Is relativistic time dilation applicable to non-relativistic speeds? Posted: 27 Apr 2020 11:06 PM PDT The title might be contradicting itself, but here is my question: If I drive a car at 300km/h for enough time, will I eventually be displaced, even for miliseconds, from an external observer? As in: if I travel in a spacecraft close to the speed of light and return to earth everyone would be older than expected right? The closer to light speed the more extreme this becomes and viceversa. Does this still happen with everyday speeds? Even in a very tiny negligible level? [link] [comments] |
Why are atoms of the same material usually found together in nature? Posted: 27 Apr 2020 03:47 PM PDT Sometimes it is "easy" to explain, like atoms inside the stars or the heavy metals in the earth's core, because of their different densities. However why do we find "patches" or ores of different materials? How did so many iron molecules get grouped up together so neatly for us to find? Why so much sand is concentrated in the Sahara desert? Why isn't the universe just a mess of random molecules? [link] [comments] |
Are seeds aware about gravity in order to know where the ground is ? Posted: 27 Apr 2020 03:44 PM PDT |
Why would a nuclear war cause a nuclear winter rather than contribute towards global warming? Posted: 28 Apr 2020 12:32 AM PDT The firestorms produced by the burning cities and forests caused by the bombs would produce large amounts of Carbon Dioxide and it's my understanding that this is a greenhouse gas (a contributor towards global warming). As I asked in the title, why wouldn't this heat the earth's atmosphere rather than cool it? [link] [comments] |
Posted: 27 Apr 2020 12:49 PM PDT |
What is the Klein-Nishina formula? Posted: 27 Apr 2020 08:17 PM PDT I took a radiation shielding design course and had an impartial explanation on this formula. I was wondering if anyone who has the background on this could help me understand it a little more clearly. [link] [comments] |
Is there an inverse cube law for a component of an electromagnetic wave? Posted: 27 Apr 2020 03:16 PM PDT I seem to remember reading (many years ago) that there is a component of an electromagnetic wave emitted from an antenna that obeys an inverse cube law. If this is true, what's reallly going on? [link] [comments] |
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