- Hein et al (2017) have explored scenarios for sending a spacecraft to the recently confirmed interstellar asteroid "Oumuamua". What payloads and capabilities would we wish to prioritize on the exploration of this strange and peculiar object?
- Why does the infinite series 1/n diverge?
- Why, when you are paralyzed from the neck down, are your involentary organs not paralyzed as well?
- How fast does a pressurized gas move to a lower pressure area?
- Is attraction caused by us wanting to reproduce with peoole with better genetics in areas we lack?
- How does Facebook Messenger encryption work?
- Is Gravity Weaker in the Center of a Stellar Body?
- Do the bodies of morbidly obese people decay differently than average weight people?
- Is there a theoretical possibility of some day being able to empirically verify that particles are strings? If not, what is the theoretically smallest thing we will ever be able to see in a microscope?
- What, if any, effect does continental drift have on river canyons?
- How come people can be allergic to some cats and not other cats?
- Can AC voltage oscillate from any two max/min numbers? Like 10-25 volts?
- Why do the Appalachian mountains run parallel to each other?
- How was it discovered that same metals would stick together in void? (plus a couple of questions in comments)
- What is the mechanism that forces magnets apart according to QFT?
- Does the ripeness of a fruit affect its nutritional value?
- Why are enzymes so important for living organisms?
- What tells the body that it’s “full”? Amount the stomach is stretched? Amount of calories?
| Posted: 21 Nov 2017 03:47 AM PST And, to keep everybody's hopes up, allow me to highlight the following quote: "It is concluded that although reaching the object is challenging, there seem to be viable options based on current and near term technology." Can we get on board of this? Special shoutout to Redditors from JPL, ESA and other space agencies .... Any ideas? [link] [comments]  |
| Why does the infinite series 1/n diverge? Posted: 21 Nov 2017 05:05 AM PST I get that the integral of 1/x is ln(x) and ln(x) increases with x to infinity, but 1/n also approaches 0 as n approaches infinity. Shouldn't the series converge if we're eventually just going to be adding 0 to it? [link] [comments]  |
| Why, when you are paralyzed from the neck down, are your involentary organs not paralyzed as well? Posted: 20 Nov 2017 07:01 PM PST |
| How fast does a pressurized gas move to a lower pressure area? Posted: 21 Nov 2017 12:47 AM PST I remember being told that the pressure wave velocity is limited to the speed of sound in that medium at whatever temperature it is at. So if you had two tanks (A and B) joined by a pipe with a valve, tank A is pressurized and tank B is at atmospheric pressure. The valve is then instantly opened. Is the velocity of the gas in the pipe just proportional to the pressure differential between the two tanks? Or is there some sort of choked flow condition that occurs? The reason for the question is that I just watched an episode of MythBusters where they were able to accelerate a ping-pong ball to 1100mph, which is much faster than the speed of sound. I wasn't aware that this was possible. [link] [comments]  |
| Is attraction caused by us wanting to reproduce with peoole with better genetics in areas we lack? Posted: 21 Nov 2017 05:26 AM PST |
| How does Facebook Messenger encryption work? Posted: 21 Nov 2017 05:46 AM PST As I understand is, the 'secret message' feature uses a key to encrypt the data on your end, it's transmitted while encrypted, and then at the other end it's decrypted using the same key. (A key I assume being a kind of code which scrambles the message into nonsense and can be reverse-engineered to make it a message again). What I'm really wondering is: how does the key get transmitted between the two accounts securely? Wouldn't someone who intercepted the encrypted message just as easily intercept the key, assuming that the two accounts have to communicate the key to each other? [link] [comments]  |
| Is Gravity Weaker in the Center of a Stellar Body? Posted: 20 Nov 2017 09:23 PM PST As you go closer to the center of an object, you would think that the gravity would actually weaken due to the mass of the object that you have already passed.. Imagine you made it to the core of the earth. The gravity would be pulling you from all sides rather than smashing you. The pressure may not be that great either considering this effect. I'm not saying that this idea is correct, but if it makes sense, then nuclear fusion wouldn't happen at the core of a star. It would happen in a sphere ring say 1/3 of the way towards the core. [link] [comments]  |
| Do the bodies of morbidly obese people decay differently than average weight people? Posted: 20 Nov 2017 06:30 PM PST What (if any) health factors lead to a more rapid/slower decomposition? [link] [comments]  |
| Posted: 20 Nov 2017 03:46 PM PST |
| What, if any, effect does continental drift have on river canyons? Posted: 20 Nov 2017 08:42 PM PST |
| How come people can be allergic to some cats and not other cats? Posted: 20 Nov 2017 06:13 PM PST I recently had a cat in my home for an evening and my throat swelled up and I could barely breathe until the cat left the next day. but I had a cat for 13 years and frequently visit my friend and his cat. how come someone might have such a severe reaction to one cat and not another cat? [link] [comments]  |
| Can AC voltage oscillate from any two max/min numbers? Like 10-25 volts? Posted: 20 Nov 2017 03:18 PM PST |
| Why do the Appalachian mountains run parallel to each other? Posted: 20 Nov 2017 03:38 PM PST Like seen in this image. What causes this to happen? I wouldn't think that they would all be part of the same, single piece of rock when they formed - I would think that they would have to be separate at this scale. [link] [comments]  |
| Posted: 21 Nov 2017 01:49 AM PST
This topic is blowing my mind, feel free to tell me anything if you are an expert on this field! [link] [comments]  |
| What is the mechanism that forces magnets apart according to QFT? Posted: 20 Nov 2017 07:46 PM PST |
| Does the ripeness of a fruit affect its nutritional value? Posted: 20 Nov 2017 10:59 AM PST For example does a green underripe banana provide different nutritional value than a brown overripe banana? [link] [comments]  |
| Why are enzymes so important for living organisms? Posted: 20 Nov 2017 06:06 PM PST Why knowing how different factors such as temperature, pH, substrate and enzyme concentration affect enzymes is important? [link] [comments]  |
| What tells the body that it’s “full”? Amount the stomach is stretched? Amount of calories? Posted: 20 Nov 2017 10:49 AM PST |
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