- The rate of universal expansion is accelerating to the point that light from other galaxies will someday never reach us. Is it possible that this has already happened to an extent? Are there things forever out of our view? Do we have any way of really knowing the size of the universe?
- Is a spider's vision stitched together like ours?
- Are humans getting taller?
- Could a substance get so hot that it behaves relativistically?
- If current tests to date have shown that matter and anti-matter interact with light the same way (i.e. anti-hydrogen photon emission spectrum is the same as hydrogen), how can we assume that the universe is made up of an abundance of regular matter, and not isolated clusters of each type of matter?
- Is it feasible to have the Curiosity rover driven to the insight lander and snap a pic of it?
- What modulation and/or error correction techniques are used by the Mars rovers to send data to the earth?
- Is there "air resistance" in space?
- Why are fast breaths cooler than slow breaths?
- Are jackfruit related to corn?
- How Nasa gets live daya from mars?
- What is the physiological mechanism that causes mesolimbic pathway resistance?
- What is the black-body radiation of a negative-temperature body?
- How realistic fiction portrayal of extraterrestrial decoded humanity's digital radio communication?
- On Nov. 24th at 5:48 am PDT a 5.3 earthquake 6.2 mi deep happened near the antipode of Portland, OR south of Madagascar near where a fault separates the African Plate from the Antarctic Plate. At around 11:30pm that night I felt vibrations and am wondering if perhaps these waves were related?
- If Earth had the form of giant cucumber, would the gravity be the same everywhere on it's surface?
- Does thinner air at higher elevations affect a car's acceleration?
- Why is this Benzene resonance not possible?
- Can anyone explain the mechanism by which exercise boosts the immune system?
- How do carcinogens cause cancer?
| Posted: 26 Nov 2018 02:17 PM PST |
| Is a spider's vision stitched together like ours? Posted: 27 Nov 2018 06:19 AM PST Even though we have two eyes, we see one image. In every interpretation of a spider's vision I've seen, they see 8 images. Is theirs actually like that, or do they also see one image? [link] [comments]  |
| Posted: 26 Nov 2018 01:06 PM PST I've read that Americans, on average, have stayed the same height for the past 50 years. Is this true even now with the amount of immigration from Latin America and Asia where people tend to be shorter on average? Are millennials taller than their parents? Has the age at which we stop growing decreased making young children of this generation taller than the previous generation? [link] [comments]  |
| Could a substance get so hot that it behaves relativistically? Posted: 27 Nov 2018 06:49 AM PST If temperature is a measure of the kinetic energy of the particles in a substance and we can calculate the root-mean-square velocity of those particles, then hotter substances contain faster-moving particles. At sufficiently high speeds of constituent particles, could macroscopic objects show relativistic effects? [link] [comments]  |
| Posted: 27 Nov 2018 07:38 AM PST |
| Is it feasible to have the Curiosity rover driven to the insight lander and snap a pic of it? Posted: 26 Nov 2018 10:20 PM PST Im not sure if its possible at all or if its not probable or if the two are on completely different sides of the planet, but i think it would be the coolest thing in the world for the rover to take a pic of insight [link] [comments]  |
| Posted: 26 Nov 2018 06:47 PM PST |
| Is there "air resistance" in space? Posted: 26 Nov 2018 11:48 PM PST Yes, I understand that space is a vacuum and that there isn't actually air out there. That being said, I was reading about the interstellar medium and nebulae and was wondering if the density of space would affect the speed of an object going through it. For example, would there be any noticeable change in velocity of the voyager probe as it left our galaxy and entered interstellar space? Or what if it was on course for a particularly dense nebula? The more of this that I'm typing out the more questions I have. I assume that light would also be refracted through a denser part of space as well- so is that also the case? [link] [comments]  |
| Why are fast breaths cooler than slow breaths? Posted: 27 Nov 2018 08:30 AM PST If temperature is average kinetic energy, why is it colder when I blow air out quickly and warmer when I blow air out slowly? Shouldn't the faster air have a higher overall kinetic energy and therefore a higher temperature? [link] [comments]  |
| Are jackfruit related to corn? Posted: 27 Nov 2018 08:04 AM PST http://imgur.com/gallery/ovxcYuY When I see someone peeling jackfruit, it looks like a giant corn cob. Are they related? [link] [comments]  |
| How Nasa gets live daya from mars? Posted: 27 Nov 2018 12:29 AM PST I mean light travels from mars to earth in 8 minutes appox. Was that live stream telling us 8 minutes old news? Edit: data* [link] [comments]  |
| What is the physiological mechanism that causes mesolimbic pathway resistance? Posted: 27 Nov 2018 06:46 AM PST |
| What is the black-body radiation of a negative-temperature body? Posted: 26 Nov 2018 06:48 PM PST That is to say, an emitting medium in a population inversion? Are higher frequencies more common than low? [link] [comments]  |
| How realistic fiction portrayal of extraterrestrial decoded humanity's digital radio communication? Posted: 27 Nov 2018 04:24 AM PST After reading too much r/hfy stories, a question tugged on my mind. Considering that in digital communication there are many different file standard and encryption methods, how realistic fiction's usual portrayal of extraterrestrial parked their ships in orbit and somehow able to decode our communication and then using it to communicate with us or at least able to read the files/watch the video? Pardon my poor grasp of English language. [link] [comments]  |
| Posted: 26 Nov 2018 11:49 PM PST |
| If Earth had the form of giant cucumber, would the gravity be the same everywhere on it's surface? Posted: 26 Nov 2018 04:35 PM PST |
| Does thinner air at higher elevations affect a car's acceleration? Posted: 26 Nov 2018 06:29 PM PST I was thinking about this driving down the highway today. Does the thinner air provide less wind resistance enough to make a difference in acceleration? Additionally does the thinner air/less oxygen make the engine less efficient? Would these offset one another? [link] [comments]  |
| Why is this Benzene resonance not possible? Posted: 26 Nov 2018 06:47 PM PST I was reading an example in my book that asked if the loss of the chlorine leaving group would be stabilized by resonance and couldn't understand why this resonance is not possible. [link] [comments]  |
| Can anyone explain the mechanism by which exercise boosts the immune system? Posted: 26 Nov 2018 09:34 PM PST I've looked into it (slightly) but cannot find a definitive answer [link] [comments]  |
| How do carcinogens cause cancer? Posted: 26 Nov 2018 10:41 AM PST As I understand, cancer is caused by mutations in DNA. I can see how UV light or radiation can cause a mutation by directly damaging the DNA. But how does an exposure to certain chemical cause cancer? Shouldn't most chemicals be stopped by cell membranes? Or when ingested, wouldn't they normally broken down in the digestive tract before getting into the bloodstream? Also, if a chemical can go all the way into cell nucleus to damage DNA, wouldn't it also cause other kinds of damage, causing cell death? [link] [comments]  |
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