Was there a scientific reason behind the decision to take a picture of this particular black hole instead of another one ? |
- Was there a scientific reason behind the decision to take a picture of this particular black hole instead of another one ?
- How would an array of Space Telescopes work?
- Black Hole Megathread: Day 2. Ask all black hole questions here
- Do animals get muscle knots the same way humans do?
- Are brain development timelines consistent across cultures?
- How far back in time could you go before 'natural wonders' such as the Grand Canyon or Uluru? Are there any unique features which have developed over the span of human history?
- How effective is our ability to detect incoming, disaster-causing asteroids/meteors?
- Is the Schwarzschildradius of a black hole dependent on local curvature of spacetime at the observer's position?
- It is said that we tend to forget memories that aren't recalled often or not used often, if so then how come traumatic memories stay vivid even after decades of experiencing them?
- What factors affect the distribution of our taste buds and what flavors we enjoy? Are there genetics factors? Is it all about what you’re exposed to? What causes our tastes in food to change as we age?
- How long do water filters in our fridge actually last and what are the negatives of using one for an extended period of time?
- Can we produce energy from gravitational waves that catching by LIGO?
- With the new picture of a black hole, is there now any doubt or opposing evidence that black holes exist?
- How do platypuses digest food without a stomach that creates acid?
- Why is the melting point of D-amphetamine so high?
- How Does Sound Combine to be Louder?
- Is it likely there are planets with geostationary moons? Would they have a perpetual eclipse in one area?
- What is the science behind bread rising?
- Why do telescopes and cameras use light instead of measuring other particles/waves such as sound or radio waves to form an image?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- At what point does a star cluster become a galaxy?
| Posted: 10 Apr 2019 10:57 PM PDT I wondered why did they "elected" this one instead of a closer one for instance? Thank you [link] [comments]  |
| How would an array of Space Telescopes work? Posted: 11 Apr 2019 01:24 AM PDT The image of the Black Hole this week was made possible by connecting many ground-based radio telescopes, making an 'aperture' the width of our planet. What I wonder is; could a constellation of space radio-telescopes connect to make the 'aperture' larger, even solar system sized? Also, would increasing the number of satellites in the constellation increase the resolution of the image? [link] [comments]  |
| Black Hole Megathread: Day 2. Ask all black hole questions here Posted: 11 Apr 2019 07:20 AM PDT If you didn't see the fantastic AMA yesterday with the Event Horizon Telescope team, be sure to check it out. If you have any further questions, you can ask them here and our many expert panelists will come answer. While it's always nice to have a Q&A discussion, be sure to utilize out FAQ, the search function, and google as well. [link] [comments]  |
| Do animals get muscle knots the same way humans do? Posted: 11 Apr 2019 08:18 AM PDT |
| Are brain development timelines consistent across cultures? Posted: 11 Apr 2019 08:08 AM PDT I always hear how the prefrontal cortex (responsible for logical thought process/understanding long term consequences) isn't fully developed until age 25ish. What I wonder is if this has been checked in cultures where kids are given more responsibilities at younger ages than in the USA. Like is the development of the prefrontal cortex(and the rest of the brain) something that happens on a rough timeline like crawling and walking. Or is it developed through having life experience and receiving consequences from actions? Therefore, it develops later in the USA where kids aren't given many freedoms or responsibilities. [link] [comments]  |
| Posted: 11 Apr 2019 08:07 AM PDT |
| How effective is our ability to detect incoming, disaster-causing asteroids/meteors? Posted: 11 Apr 2019 05:16 AM PDT Could there be something extinction-causing on its way to us that we wouldn't know about until it's practically right on top of us? Just curious. [link] [comments]  |
| Posted: 11 Apr 2019 04:17 AM PDT So I think I have a pretty decent grasp of general relativity. For a long time I had problems reconciling the relatively weak gravitational forces experienced for an observer in a frame near the event horizon of a supermassive black hole in particular with the nature of the event horizon being this hard boundary that information cannot pass. I think I managed to solve that in my mind, knowing that the distance from the event horizon is observer dependent. Here's a thought experiment to illustrate what I think is happening: Consider you and a friend are at a "sufficient" distance (100,000 AU) from a black hole's event horizon (r = 1 AU) so that you are currently in only very slightly curved spacetime. Now you decide to move forward 100,000.1 AU (from your original frame) while your friend stays behind. You are now at a distance closer to the singularity than you originally perceived the event horizon to be, but you still see the event horizon being some distance away from you. You now shine a laser at your previous position. The light beam does pass the initially perceived boundary but never reaches your friend and curves back. Meanwhile, your friend will never see you passing past the 100,000 AU mark and will never see you shine the laser. I understand that the initial "decision" to move forward 100,000.1 AU is kind of flawed as the distance you travel is dependent on the frame you're in and that shifts as you move closer to the black hole. My questions are this: - Will your new position cause you to perceive a smaller schwarzschildradius than you did initially, or will it have the same radius, i.e. is the calculated schwarzschildradius just an upper bound for the radius perceived by a distant observer or is it observer invariant? [link] [comments]  |
| Posted: 11 Apr 2019 06:29 AM PDT |
| Posted: 11 Apr 2019 06:18 AM PDT |
| Posted: 10 Apr 2019 12:45 PM PDT I've had the same water filter in my brita filter for more than a year now, but have never noticed a difference and the water tastes clean. Also as a bonus question, how does it even work? [link] [comments]  |
| Can we produce energy from gravitational waves that catching by LIGO? Posted: 11 Apr 2019 01:31 AM PDT I read an article:LIGO has spotted another gravitational wave just after turning back on A quote from article:
And this gave me a question. Can we produce energy from gravitational waves that catching by LIGO? If can we, is it possible be a new form of renewable energy? [link] [comments]  |
| Posted: 10 Apr 2019 03:32 PM PDT |
| How do platypuses digest food without a stomach that creates acid? Posted: 10 Apr 2019 04:19 PM PDT This is a repost, but in the original thread there was only one reply, and it got deleted. [link] [comments]  |
| Why is the melting point of D-amphetamine so high? Posted: 10 Apr 2019 08:38 PM PDT Trying to find out why the melting point of dexamphetamine sulphate is so low, yet D-amphetamine is around 300 degrees. Thankyou for any replies [link] [comments]  |
| How Does Sound Combine to be Louder? Posted: 10 Apr 2019 01:49 PM PDT Example: One person yelling at the top of their lungs is loud when close-up, but take 10000 people yelling at the same volume and it becomes deafening and audible from a long distance. What is the science of sound combining and becoming more powerful? [link] [comments]  |
| Posted: 10 Apr 2019 01:51 PM PDT |
| What is the science behind bread rising? Posted: 10 Apr 2019 05:38 PM PDT |
| Posted: 10 Apr 2019 11:12 AM PDT After seeing the EHT pictures of the black hole released this morning, I have been thinking about other methods which we could use to capture images (similar to thermal vision which measures heat and produces an image). One idea would be using radio waves to to sort of map out the bottom of the ocean where there is no light because of the depth. Is something like this realistic or already done or is there no way to form images out of radio/sound waves in a usable way? [link] [comments]  |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 10 Apr 2019 08:15 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments]  |
| At what point does a star cluster become a galaxy? Posted: 10 Apr 2019 10:37 AM PDT |
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