Bill Nye Answers Science Questions From Twitter - Part 3 | Tech Support | WIRED

41 take one marker Oh greetings everyone Bill Nye here once again to answer your science questions this is science support part 3 James Ravel asks how come we know more about space than we do about our own ocean I heard that on the dock somewhere well if you heard it on a documentary James I guess you're set no okay there's an old saying but it's easier to explore the moon than the bottom of the ocean that's true for three reasons the ocean is cold it's crushing and it's corrosive that's why it's easier with binoculars to explore the moon than it is with a scuba mask from a department store and just observe the bottom of the ocean carry-on James David Blanche flower BSc he asks now that tardigrades have settled on the moon I wonder what their future holds will they successfully rehydrate can they flourish in thousands of years will they build spaceships and return to Earth fascinating oh there's a picture he's got a picture of a tardigrade tardigrades also called the water-bearer you can see them with your naked eye you said Nick oh my god words settled I think crash landing in the harsh vacuum of space on a planetary body that has no atmosphere or liquid water I think that's not the same as settling I don't think they're gonna settle the moon David carry on Bill Nye assuming a perfect scenario where the general disasters don't occur if the earth stopped spinning would we all feel dizzy I guess so Matt attest you'll probably be able to run Tony Phillips writes a climate change question as it gets hotter more air conditioning is used heating up the air even more is there a way to cool indoor spaces without heating up the outdoors especially in cities well Tony probably not because what is the one thing you can count on in this universe that's right Tony the second law of thermodynamics heat just spreads out man so when you pump the heat out of this room or the balloon you're sitting on putting outside the outside gets a little bit warmer but the scale of it hope surprises you the amount of heat we pump out of buildings ain't no nothing compared to with the amount of heat that we're holding in by adding greenhouse gases to the Earth's atmosphere the heat island effect of cities is as more from hard scape paved surfaces buildings are not soil for example and that's why cities are so hot the AC thing is a problem but it's just the hardscape that gets us and that flippin second law of thermodynamics I'm sorry whoa man there's nothing we can do out there we got a deal it's entropy entropy killing us all hollow rights when will teleportation happen I don't know happens all the time in science fiction but that's fiction no it's just the information problem alone probably makes heliport ation impossible converting something like u into a beam of electromagnetic signals it's very very unlikely just taking you apart and putting you back together would take extraordinary amounts of energy ELISA asks honestly I have a science degree and a partially completed doctorate and I still have no idea what a neutron does ok neutrons can make things massive men and if you confuse them together you can release a whole bunch of energy which we hope is the future Liam asks if the mantle is filled with lava why aren't the oceans boiling or at least warmer than they are there's a couple things first of all that the oceans are not boiling and the earth remains very warm inside is evidence of an aphorism I hope you will embrace a saying a way of looking at the world that I hope you Liam will take to heart if things were any other way things would be different and here's what we mean by that indeed the earth does radiate a large amount but relatively small amount of heat into the icy blackness of space the bottom of the ocean is the Earth's crust you got to go down and they're ten twenty thirty kilometres most places to get to the mental carry on Liam bill life aliens were to fly by light-years away would they see the dinosaurs of the Trojan War or something since light they see is so old yes they would spur key Bill Nye this is drew asks Bill Nye why does the mean reflect in one straight line when it hits the ocean it may interest you to know that it reflects in all different directions when it hits the ocean just you as the observer see a straight line and if you don't believe me get your friends to stand in the line along the beach where you can call out to each other and ask each other if you each see a straight line and then ask yourself they're parallel or if you don't trust your friends and I don't blame you set up cameras take pictures along a kilometer or two carry on drew Andrew Ralston says okay okay I'll say how the planes work and I presume by that Andrew you mean airplanes because the Carpenters plane has a blade and you push it along the carpenter pushes it along and peels up the wood but an airplane works like a bird you get the momentum of air molecules going down hasn't produces enough force to hold the wing up and the way you get air molecules going down is get the wing going fast what about a helicopter helicopter is wings that are spinning and the propeller blades either the exposed ones that you might see on what we would call a propeller aircraft or the turbine blades inside the tubes on a jet airplane are they're going around in a circle and they're pushing air molecules back so fast that they push the airplane forward it's not magic its science Gogi Rossum's asks I'm doing my best to pronounce your name go gyro sons Bill Nye if we took all the animals out of the ocean how much shallower do you think the ocean would get in other words how much water do you animals displace I'll bet it's less than you think animals like you and I are mostly water animals that live in the ocean are almost all water I don't think it would change that much since you asked how much do you think my answer is not much carry on go Jiro Suns drew asked Bill Nye do you think aliens actually exist so you want me to resist making a joke about my old boss I don't know if he was an alien there are 200 billion stars in our galaxy and there are at least that many galaxies when I was in school it was speculated that there what might be a planet a single planet around one and every hundred stars now with observations from Hubble Space Telescope Kepler space telescope other inferential methods people think there probably about ten planets around every star so that's another factor of a thousand that takes you into the to trillions in just our galaxy if you got two trillion of anything you got to figure something's going to happen so there probably are aliens through the cinturón and do fabulous and important Twitter style podcasts I don't know maybe carry on aerobic and reek because he says the asus or she says the H is silent are you an alien bill sent here to educate the human race and save us from our own destruction yes I am an alien has been I've been sent here like the landing party that that one astronaut claims he believes in no I'm not an M one of you I'm one of us we're all in this together links shall kill 89 Bill Nye how does fusion work do you think we'll be able to have fusion power plants where we use nuclear power plants for 2050 fusion works by overcoming what's called the strong nuclear force the strong nuclear interaction and I believe it is quite reasonable we will have fusion not by running a stream of protons into deuterium or tritium oh no but by running a stream of neutrons into boron hydride gas stay tuned kc Kooning writes bill nye I've been fascinated and quite obsessed parenthetically with the alternate parallel universe theory oh you know that theory that theory about the alternate parallel universe so my question is this if such a thing where exists with the laws of physics necessarily have to apply to every single universe well so here's the thin KC let's let's just take history of physics for example people got by they built pyramids they built they discovered round things roll made wheels all kinds of agriculture was developed without really formalizing the laws or rules of physics or natural laws and so people presume that they knew what we call Newton's laws of motion were it for centuries and it was great we made all sorts of progress but then relativity was discovered and then quantum electrodynamics and we refined the laws of physics people when you're sophomoric view of the world the Isaac Newton was wrong I think was pretty flippin right but then was we made more discoveries about the nature of mass and white and quantum electrodynamics we refined it so I presume if another universe exists and it has what we might call different laws of physics it doesn't mean that our laws of physics are necessarily wrong it just means they're incomplete every day we learn a little more Terry on kacie Brian Schmidt asks didn't I hear we could get to the next habitable planet in a few years with this space sail just need to say all the size of Texas in order to do it say all the size of Texas is not going to take us to another inhabitable when in a few years but solar sails such as light sail too may revolutionize space exploration here in the solar system because we can go to extraordinary speeds with no rocket fuel there are certain missions that solar sails are ideal for put a solar sail spacecraft at an inferior orbit closer to the Sun than the earth is and keep an eye out for asteroids or maybe more importantly importantly coronal mass ejections from the Sun which send a beam of charged particles slashing through space toward the earth which could disable many many of our communication systems so there are certain missions that solar sails are ideal for but a texas-sized one going to a nearby habitable planet is probably not among them and I remind you that it's not the solar wind it's not particle streaming from the Sun that give a solar sail spacecraft to push it is light itself photons there's about a hundred times more pressure from photons than charged particles fascinating I hope carry on Brian bill nighy do insects feel gravity the same way we do yes the spider-man does whatever a spider can of course the spiders aren't insects but he doesn't do it because his understanding of gravity is different he does it because because he's not real thank you for your questions we'll be back with more science support number four coming soon and when it does turn it up loud

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Id: FaCeZsOOKEY

Length: 12min 1sec (721 seconds)

Published: Tue Sep 17 2019