On an unrelated matter, however, the duo also point out that if all kilonovas across the universe actually are this bright, brilliant and spherical, they may serve another purpose: stellar cartography. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. What If chapters. The story icomes from a National Geographic video. "Wu, X., X. Collilieux, Z. Altamimi, B. L. A. Vermeersen, R. S. Gross, and I. Fukumori (2011), Accuracy of the International Terrestrial Reference Frame origin and Earth expansion, Geophys. This page was last edited on 26 May 2022, at 19:45. 0:04. Weiss, Megaconstellations are changing the night sky forever, forcing astronomers to adapt. ''Your stupid!''. 0:52. Karam calculates that the neutrino radiation dose at a distance of one parsec[6]3.262 light-years, or a little less than the distance from here to Alpha Centauri. Inbox, #5, Weird (and Worrying) Questions from the What If? 08.23.07. Although there is a vaguely plausible reason for the star to be called an "iron giant", astronomers do not commonly use that particular name (the alternative of "iron star" is used for an article about hypothesized class of stellar-mass object, though the description allows that there is a separate usage that relates to Eta Carinae) and you are currently only redirected straight upon The Iron Giant, that first movie directed by Brad Bird. Albert Sneppen, first author of the study and a doctoral student at the Niels Bohr Institute, suggests that perhaps a huge amount of energy blew out from the center of the explosion to create its oddly round shape. and gently set the comet in the ocean. This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. I make mistakes, I am out of control and at times hard to handle. When our sun enters this phase in a few billion years, it will consume Mercury, Venus, and possibly the Earth. At least I think. Similarly, it's so hard to get enough neutrinos to compel even a single one of them to interact with matter, making it hard to picture a scenario in which there'd be enough of them to affect you. Everest would no longer be in the "death zone". A neutron star is effectively a stellar corpse; the leftover remains of a star that has exhausted its fuel and collapsed into itself in a spectacular fashion. How do I minimise waste on a flight? A new gravitational-wave detection points to the largest known neutron star or the smallest known black hole, and suggests weirder things still to come. xkcd.com. [6]In fact, according to Rifle Magazine, a gun writer once claimed that at a thousand yards, he could catch ordinary rifle bullets with a baseball glove. [5]Close Focus Research, Maximum Altitude For Bullets Fired Vertically. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. Otherwise, if you look at a standard star to measure the structure of our galaxy, you might not know if it's super far away or just really dim for whatever reason. Monisha Ravisetti is a science writer at CNET. The millions of people around the world who read and loved What If? "In conclusion, no statistically significant present expansion rate is detected by our study within the current measurement uncertainty of 0.2 mm yr1. One is that dropping things from space creates heat. It wouldn't just cancel out the cooling effect of the iceover time, the comet's greenhouse effect would deliver as much heat as if you'd just let it slam into the planet and vaporize. Hoping to cool the atmosphere by opening everyones freezer door at the same time? Statistically, my first neutrino interaction probably happened somewhere around age 10. A paper by radiation expert Andrew Karam provides an answer. In neighborhoods where people fire guns upward in celebration, bystanders are routinely killed by falling bullets. As such, they are the densest objects in the universe. A tablespoon of a neutron star weights about 1 billion tons. feed 2022 . This is calculated by multiplying the number density of the neutrons n_n by, 3p_f^2/10m_n, the average Kinetic Energy per fermion in a no. The Only! She covers climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical thought experiments. is a blog hosted on the xkcd.com domain and written by Randall Munroe with entries posted occasionally. The CO2 released from the comet would raise the temperature of the Earth for centuries. Can I leave an internship for another internship? Order here! Additionally, the star loses a lot of mass in the process and winds up only about 1.5 times the Suns mass. Most of our infrastructure would have collapsed. The neutron stars we can observe average about 1.8 million degrees Fahrenheit, compared to about 9,900 degrees Fahrenheit for the Sun. This is due to a combination of factors. Surprisingly, most skyscrapers would hold up fine under much higher gravity. It might not be able to help us with this problem, but perhaps someday, far in the future, we'll encounter a problem for which a giant comet crane is the solution. Complex physics dictates what happens after two neutron stars collide -- whether the collision creates a bigger neutron star or collapses to form a black hole. Maybe its time for a brief introduction to thermodynamics. Taking the yellow dwarf as our scale, the blue giant is okay, but the red dwarf should be about the size of the white dwarf, the red giant should be far larger (Takes up entire comic) and the white dwarf should be far smaller (invisible). The detonation of a hydrogen bomb pressed against your eyeball? Small chunks of ice falling from space disintegrate and boil away before they reach the ground, warming the upper atmosphere. The "bullet catch" is a common magic trick in which a magician appears to catch a fired bullet in mid-flightoften between their teeth. [2]I'd like to remind everyone that while I write sometimes about the interesting physics of bullets, I'm not an authority on firearms safety. In the other scenario, we'd be ok for a little while longer. The physicist who mentioned this problem to me told me his rule of thumb for estimating supernova-related numbers: However big you think supernovae are, they're bigger than that. "Knowing what the shape is, is crucial here, because if you have an object that is not spherical, it emits differently, depending on your sight angle. 2 is sure to be another instant classic adored by inquisitive readers of all ages. There's been a lot of them, and they seem repetitive - no real new humor. still have questions, and those questions are getting stranger. Concrete expands and contracts by more than that every day. That was unexpected. Sneppen also offers that, in the milliseconds during which the two neutron stars collided to form a giant neutron star, that newly minted mega star might've emitted a bunch of neutrinos. Unlike the larger, original Starlink V2s designed for Starship, these upgraded Starlink satellites are still designed to launch on Falcon 9. An illustration of what the oddly spherical explosion might've looked like. Neutron stars result out of supernova explosions of massive stars, combined with gravitational collapse, which compresses the core past . The life of super-Earths: how the hunt for alien worlds and artificial cells will revolutionize life on our planet. Her favorite movies are Dunkirk and Marcel the Shell with Shoes On. 2 What would happen if a neutron star was placed close to the earth? Most other clocks would keep working fine. Argis13 (talk) 14:18, 25 February 2021 (UTC). If you want to use larger bullets, you'll need a much larger drop; an AK-47's bullet can go over two kilometers upward. xkcd what if neutron star Home; home; After this point, it would collapse into something like a sputtering white dwarf or neutron star, and thenif its mass kept increasingeventually become a black hole. But if you can't handle me at my worst, then you sure as hell don't deserve me at my best.". This means you're free to copy and share these comics (but not to sell them). At that speed, as long as you were in the right place at the right time, you could snatch it out of the air. Applying the physicist rule of thumb suggests that the supernova is brighter. Astrophysicists are scratching their heads over a strangely spherical space explosion. Look at your handthere are about a trillion neutrinos from the Sun passing through it every second. 125. If you observed a supernova from 1 AU awayand you somehow avoided being being incinerated, vaporized, and converted to some type of exotic plasmaeven the flood of ghostly neutrinos would be dense enough to kill you. Since the volume expands faster than the surface area, the overall heat flowing out per square meter will increase. To avoid the problem of rifts in the ground, let's imagine all the matter in the Earth, from the crust to the core, starts expanding uniformly. Schutte, Barometric hazards within the context of deep-level mining, The Journal of The South African Institute of Mining and Metallurgy Even if we'd managed to survive all the other problems, by 100 years, we'd be dead from oxygen toxicity. It would have lost its upward momentum, but not its rotational momentum; it would still have the spin given to it by the barrel of the gun. That's why the phrase "lethal dose of neutrino radiation" sounds weirdit mixes scales in an incongruous way. If some parts of the neutron star are hotter than others, such as the magnetic poles, then pulses of thermal X-rays from . Robin Dienel/Carnegie Institution for Science), published Wednesday in the journal Nature, Do Not Sell or Share My Personal Information. Virtually every mountainside would see massive landslides as material sought out a shallower angle of repose. But our calculations clearly show that it is," Darach Watson, associate professor at the Niels Bohr Institute and study co-author, said in a statement. A sugar cube of neutron star material weighs as . Only small insects (and sea animals) would be physically able to move around. Which would still be less than 1% of the ants in the world. The very central region of the star the core collapses, crushing together every proton and electron into a neutron. This is a list of What If? Lightcaller (talk) 01:55, 17 September 2020 (UTC), And of course Brad Pitt is a star of yet another type 108.162.215.188 04:53, 17 September 2020 (UTC), Re Beige Gorgon, this is the average colour of the universe: https://en.wikipedia.org/wiki/Cosmic_latte, Note that FeII spectral lines actually refer to signs of Fe+ ions (neutral is 'I', every ionisation level above that adds 1) but I can't see it mattering to anyone who doesn't read this far and it'd certainly have FeIII lines as well for 2+, or maybe I'm confused myself, so I supported the (chemistry) Ferrous association in the description with a link while I was editing nearby. The most common, smallest, and coolest type of true star in the universe. Neutron stars cram roughly 1.3 to 2.5 solar masses into a city-sized sphere perhaps 20 kilometers (12 miles) across. "Supernovii" is discouraged. : Serious Scientific Answers to Absurd Hypothetical Questions No observers of any of these celestial bodies have been petrified. This crowd takes up an area the size of Rhode Island. The reason you don't notice the neutrino flood is that neutrinos hardly interact with ordinary matter at all. [5]Lawrence Grybosky, Thermal Expansion and Contraction. 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions is out! Okay, if you insist. The Earth is not, currently, expanding. "So the spherical shape tells us that there is probably a lot of energy in the core of the collision, which was unforeseen," Sneppen said. It's not actually enough to substantially warm the planetEarth's surface temperature is dominated by the atmosphere and the Sunbut it would lead to more volcanoes, more earthquakes, and faster tectonic movement. The Largest Gun Ever Built apparently shot high explosives about 50,000m. A blur, mostly. and you were hanging out in a hot-air balloon directly above the firing range it's possible that you could reach out and snag the bullet at the apex of its flight. If you built an icy waterfall from space, the water would arrive at the bottom as a river of superheated steam. When the core of a massive star undergoes gravitational collapse at the end of its life, protons and electrons are literally scrunched together, leaving behind one of nature's most wondrous creations: a neutron star. But opting out of some of these cookies may affect your browsing experience. In terms of the perplexing explosion shape, though, Watson explained another possible reason. 16. Most neutron stars cram twice our sun's mass into a sphere nearly 14 miles (22 kilometers) wide, according to a new study. The indigo banshee might be a neutron star, as they are the smallest stars known (<20 km radius, the indigo banshee is even smaller than the white dwarf, although not by much here just to make it differentiable), extremely hot (100,000 - 1,000,000 K: the hue shifts beyond blue into indigo territory), and often show weird activity patterns . The pressure inside planets is, Although some radioactive elements, like uranium, are heavy, they get squeezed out of the lower layers because their atoms don't mesh well with the rock lattices at those depths. Join Us in Tucson for Our Annual Public Star Party! Red giant: 3-2000 R; 0.3-50 M, 2500-4000 K, 0.3-650000 L. At such a close distance, the orbital frequency is very high (hundreds of Hertz), so the neutron star is spun up . After a few years, the comet's greenhouse effect would have trapped more heat than the ice absorbed, and over the decades to follow, the extra heat would keep piling up. Various ideas were put forward to explain this, including the idea that the ocean basins were rifts that opened in the surface of a . A neutron star typically would have a mass that's perhaps half-a-million times the mass of the Earth, but they're only about 20 kilometres (12 miles) across (about the size of London). Inbox, #8, Weird (and Worrying) Questions from the What If? 2 is sure to be another instant classic adored by inquisitive readers of all ages. After the first day, the Earth would have expanded by 864 meters. although it still periodically makes the rounds on YouTube. The neutron star matter got as dense (and hot) as it did because its underneath a lot of other mass crammed into a relatively tiny space. Neutron stars in these kind of systems are believed to have surface magnetic fields between 10^7 and 10^10 Gauss. What would happen if everyone jumped at the same time Xkcd? xkcd.com; what if? Planning to ride a fire pole from the moon back to Earth? The hardest part is sticking the landing. For instance, a popular distance-gauger for galactic measurementsare stars known as RR Lyrae stars, because they sort of pulse the light they emit, so it's possible to get an average brightness on them. The cookies is used to store the user consent for the cookies in the category "Necessary". Not as quickly as you might think. Generally, it turns into heat. Neutron stars are made in supernova explosions which are giant neutrino factories. Sure, regular stars can create the basic elements: helium, carbon, neon, oxygen, silicon, and iron. Recent research suggests that neutron star collisions are one of the universe's main sources of heavy elements like gold and uranium. Statistically, my first neutrino interaction probably happened somewhere around age 10. 162.158.158.19 09:45, 17 September 2020 (UTC), My opinion: I'm kinda getting bored of this types of comics here - listing some real scientific stuff and some made up. Gravity would take a long time to increase. In this case, it was written as if the page Iron Giant redirected to Eta Carinae, a large luminous blue variable star which has a relatively high level of ferrous ions. Neutron stars pack their mass inside a 20-kilometer (12.4 miles) diameter. 108.162.238.5 06:04, 19 September 2020 (UTC), The indigo banshee might be a neutron star, as they are the smallest stars known (<20 km radius, the indigo banshee is even smaller than the white dwarf, although not by much here just to make it differentiable), extremely hot (100,000 - 1,000,000 K: the hue shifts beyond blue into indigo territory), and often show weird activity patterns (pulsars, X-ray binaries, radio emissions, magnetic fields) when compared to live stars. more from Astronomy's weekly email newsletter. would be around half a nanosievert, or 1/500th the dose from eating a banana.[7]xkcd.com/radiation. This cookie is set by GDPR Cookie Consent plugin. Hercules X-1 isn't alone in space. This is (currently) the main way global warming is raising the sea level. When we take our spoon and transport it to Earth, the rest of the stars mass and the gravity associated with it is gone. What it saw appears to be light from stars grouped together in galaxies, at a time shortly (in astronomical terms) after the big bang, when current theories predict that stars would not have clustered so closely together in that time . Red dwarf: 0.09-0.5 R; 0.07-0.3 M, 1500-4000 K, 0.00001-0.05 L. A spoonful of neutron star suddenly appearing on Earths surface would cause a giant explosion, and it would probably vaporize a good chunk of our planet with it. A pulsar is a fast-spinning neutron star: the remnant of a star that has fallen in on itself under the pull of its own gravity, collapsing down to a dense, city-size orb of . DeathNoteRs 7 yr. ago. But since that air is spread out over a larger area, the overall effect would be decreasing air pressure. Even after a day, the extra 5.4 kilometers would be handled easily by virtually all structures. If you succeeded, you might notice something odd: In addition to being hot, the bullet would be spinning. This CO2[4]Along with carbon monoxide, which indirectly affects the climate in a similar waysee pg. These cookies ensure basic functionalities and security features of the website, anonymously. If it comes down to a vote, I think that we should stick with American spelling in general, because Randall is American. If we were concerned only about the weight, putting a spoonful of neutron star on Earths surface wouldnt affect our orbit or the tides. The neutron star, known as PSR J0952-0607, was discovered in 2017 about . A neutron star may have around 1-2 times the mass of the Sun, but is contained in a sphere only 20 km (12 mi) wide. By clicking Accept All, you consent to the use of ALL the cookies. The phrase "lethal dose of neutrino radiation" is a weird one. According to a new study,published Wednesday in the journal Nature, astrophysicists analyzed data about a neutron star collision -- a kilonova -- detected in 2017 and found the cosmic crash formed a perfectly spherical explosion. Along with carbon monoxide, which indirectly affects the climate in a similar waysee. As he consistently demonstrates, you can learn a lot from examining how the world might work in very specific extreme circumstances. [11]Sasselov, Dimitar D.. 2. the added ice would cool the water down by only about a millionth of a degree. The largest class of star in the main sequence, these are highly luminous and have life spans measured in only millions of years, rather than the billions or trillions of years for other star types. Thus, no matter your gun, youre not shooting a bullet around the Earth. F = GMm/ (r^2) We can use this classical formula to estimate the gravity on a Neutron Star. So, perhaps the neutron stars' neutrons got converted? 2023 CNET, a Red Ventures company. No. They're like the baby brothers of black holes. 3.262 light-years, or a little less than the distance from here to Alpha Centauri. 4 min . This is a list of What If? After 100 years, we'd be experiencing over six gees of gravity. (Image credit: Shutterstock) Neutron stars are the remnants of giant stars that died in a fiery . If it were suddenly set free from its gravitational field, it would blow up under earths gravitational field. Once its nuclear fuel is consumed, the . Argis13 (talk) 18:05, 17 September 2020 (UTC), I wonder if the indigo banshee isn't referring to indigo children172.69.34.60 23:30, 17 September 2020 (UTC), Perhaps this comic was inspired by this fact: https://www.zdnet.com/article/20-years-of-linux-on-big-iron/ If the comet were placed in the ocean,[3]It actually wouldn't have much effect on global sea level, but the influx of cold water on the surfaceand the dust released into the aircould definitely mess with the atmosphere. The embedded Station Explorer for X-ray Timing and Navigation Technology, or . Everything within that 5 mile field would be blown away, as if hit with a nuclear bomb. This website uses cookies to improve your experience while you navigate through the website. What about our roads and bridges? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions is out! Previously, she was a science reporter with a start-up publication called The Academic Times, and before that, was an immunology researcher at Weill Cornell Medical Center in New York. How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? A tablespoon of the Sun, depending on where you scoop, would weigh about 5 pounds (2 kilograms) the weight of an old laptop. The Neutron star Interior Composition Explorer mission, or NICER, will study the extraordinary environments strong gravity, ultra-dense matter, and the most powerful magnetic fields in the universe embodied by neutron stars. That star can either be completely destroyed, become a black hole, or become a neutron star.The outcome depends on the dying star's mass and other factors, all of which shape what happens when stars explode in a supernova.. Neutron stars are among the densest objects in the cosmos. This would be very brief. If the article has a different name in the corresponding book than on the blog, then the alternative title will be listed alongside the blog title. There are no purely vertical cliffs that are that tall, so you'd need to fire the bullet at an angle, and it would have significant sideways speed at the top of its arc. This concept is especially interesting because it would explain how lighter elements could've formed with the kilonova as the team recorded. More active plate tectonics might be good for life. Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. A tablespoon of a neutron star weights about 1 billion tons. Therefore, only the surfaces can cool by the emission of such radiation. A neutron star also has powerful gravity pulling it together, but a force between the neutrons, caused by a quantum mechanical effect known as degeneracy pressure, pushes the particles apart . and more Earth means more heat. Neutron stars are phenomenally dense. But it takes the collision of two neutron stars incredibly dense stellar corpses to . Colliding neutron stars decapitate zombie theory of . Star Sand February 11, 2014. Beyond being weird little ghost particles that fly through everything without a trace -- trillions of them are zipping through your body right now, but you can't tell because they maze around your atoms --neutrinos can have a special interaction with neutrons. When a neutron star is first formed in a supernova, its surface is extremely hot (more than 1 million degrees). If this were the only mode for the decay in the temperature of such objects, one would expect them to be easily detected by X-ray observations for quite a long time after their formation, of order 10 6 yr, since their formation surface temperatures are in . Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water? what if? A bullet fired straight up would eventually reach a maximum height. The former NASA roboticist, 29, has built a cult following with his stick-figure webcomic xkcd as well . By signing up you may also receive reader surveys and occasional special offers. :P 172.69.63.201 14:44, 17 September 2020 (UTC), Question: What is the style guide for British vs. American Spelling (e.g., Color vs. Colour) in explain xkcd? For more, see, Accuracy of the International Terrestrial Reference Frame origin and Earth expansion, roughly proportional to the square of their surface area, Barometric hazards within the context of deep-level mining, Note on the motion about an attracting centre of slowly increasing mass. The star starts fusing helium to carbon, like lower-mass stars. For the rest of the day, you wouldn't notice much of anything. Its protons and electrons have fused together to create neutrons under the pressure of the collapse. 2023 Astronomy Calendar & Observer's Handbook, Astronomers studied 5,000 star-eating behemoths to find out why black holes twinkle, Astronomers find signatures of short-lived, hypermassive neutron stars, Astronomy Magazine Collection 2016-2020 DVD-ROM. Neutron stars squeeze up to two solar masses into a city-size volume, giving rise to the highest stable densities known anywhere. Lightcaller (talk) 01:55, 17 September 2020 (UTC), Wat. Typical properties are shown below. According to ballistics lab Close Focus Research, this is almost exactly how high a .22 Long Rifle bullet will fly if fired directly upward. wouldn't work for a few reasons. When someone uses this quote: "I'm selfish, impatient and a little insecure. At some point, our growing Earth would reach the point where adding more mass causes it to contract, rather than expand. If you have a math background, it's sort of like seeing the expression "ln(x)e"it's not that, taken literally, it doesn't make sense, but it's hard to imagine a situation where it would apply. Given the uncertainty in the bullet's exact arc, you'd probably have to fire thousands of shots before catching one at exactly the right spot. After five years, gravity would be 25% stronger. What If? Last chance to join our 2020 Costa Rica Star Party! In true xkcd tradition, this is taken beyond reality. In that case, the birth of the black hole may be very energetic.". This makes Hercules X-1 an "accreting neutron star," meaning it pulls streams of hijacked energy and particulate matter from this so-called "donor" star. Measure how distances between various cosmic objects increase over time and you can extrapolate how the universe is ceaselessly ballooning outward. Inbox, #7, Weird (and Worrying) Questions from the What If? available to order from: Chapters Indigo, Amazon CA, Other retailers, available to preorder from: Penguin Random house, Amazon, Germany, available to order from: Waterstones UK, Blackwells UK, Amazon UK, Mighty Ape NZ, and Booktopia AU, available to order from: Amazon US, Penguin Random House, Barnes and Noble, Bookshop, Books-A-Million, IndieBound, Apple Books, Apple Audiobooks, Kobo Audiobooks, and Google Play, Serious Scientific Answers to Absurd Hypothetical Questions, Absurd Scientific Advice for Common Real-World Problems. In any of these scenarios, you'd have to get extraordinarily lucky. Neutron stars are massive gravitational monsters, and orbiting one wouldn't end up well for our planet. This is, in fact, sort of how Edwin Hubble originally showed humanity in 1929 that our cosmic realm is expanding in the first place. Inbox, #2, Weird (and Worrying) Questions from the What If? Such a tiny amount of a neutron star couldn't possibly destroy us all or could it?When a star about four times the size of our Sun explodes in a supernova, it propels its outer layers into space, leaving only a dense collapsing core behind a neutron star.Transcript and sources: https://insh.world/science/what-if-a-spoonful-of-neutron-star-appeared-on-earth/Made possible with the support of Ontario Creates http://www.ontariocreates.caWatch more what-if scenarios: Planet Earth: https://www.youtube.com/watch?v=_-HhCwYD7rc\u0026list=PLZdXRHYAVxTJCzxwmCq0NNpYq9N9wyb2lThe Cosmos: https://www.youtube.com/watch?v=gfuJyVkMH_g\u0026list=PLZdXRHYAVxTJno6oFF9nLGuwXNGYHmE8UTechnology: https://www.youtube.com/watch?v=CS3bBO05fpU\u0026list=PLZdXRHYAVxTIeRY3JtgXgoGqSEB7kDdKOYour Body: https://www.youtube.com/watch?v=QmXR46TrbA8\u0026list=PLZdXRHYAVxTJNsV9FFeNAKl2ySsHj8GZOHumanity: https://www.youtube.com/watch?v=fdCDQIyXGnw\u0026list=PLZdXRHYAVxTIFnvmOeWbv-Mt8zFxSCSvZFollow what-if on Instagram for bonus material: https://www.instagram.com/what.if.show/Suggest an episode: http://bit.ly/suggest-whatifT-shirts and merch: http://bit.ly/whatifshopFacebook Watch: https://www.facebook.com/What.If.scienceWatch on Tubi: http://bit.ly/what-if-tubi\"Imagination will often carry us to worlds that never were. 172.68.24.118 13:53, 18 September 2020 (UTC), Um, I didnt have to solve a catchpa to edit. Its like adding another mountain. Some types of stars can vary in a wide range of sizes as well. The series is produced by Marvel Studios and was released on Disney+. Small chunks of ice falling from space disintegrate and boil away . On average, out of that massive flood, only one neutrino will "hit" an atom in your body every few years. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. Feb. 17, 2023 10:28 a.m. PT. A normal star of that mass would be more than 1 million miles(1.6 million km) across. Andrew Karam provides an answer still designed to launch on Falcon 9 average about 1.8 million degrees.... A cult following with his stick-figure webcomic xkcd as well which are giant neutrino.... Kilometers would be decreasing air pressure by more than 1 % of the perplexing explosion shape,,. Not to sell them ) growing Earth would reach the ground, the! This crowd takes up an area the size of Rhode Island, Wat illustration of What the oddly explosion! This quote: & quot ; I & # x27 ; & # x27 ; her movies! Hunt for alien worlds and artificial cells will revolutionize life on our planet,... 26 may 2022, at 19:45 it every second a trillion neutrinos from the if! Wednesday in the world might work in very specific extreme circumstances are about a trillion neutrinos from What. Your eyeball active plate tectonics might be good for life his stick-figure webcomic xkcd as well the gravity on neutron. Into a neutron star is first formed in a fiery gees of.... Shutterstock ) neutron stars cram roughly 1.3 to 2.5 solar masses into a city-size volume, giving rise the! More active plate tectonics might be good for life raise the temperature of the ants in the.... Dose of neutrino radiation '' sounds weirdit mixes scales in an incongruous way indirectly affects the climate a... F = GMm/ ( r^2 ) we can use this classical formula to the! Lightcaller ( talk ) 01:55, 17 September 2020 ( UTC ), Um I... Though, Watson explained another possible reason forcing astronomers to adapt real new humor fusing helium carbon. Pulses of thermal X-rays from share my Personal Information celestial bodies have been petrified read and loved What if Suns... This quote: & quot ; I & # x27 ; & # ;. Contracts by more than that every day the same time. [ 7 ] xkcd.com/radiation, or 1/500th dose. Sought out a shallower angle of repose an incongruous way may 2022, at 19:45 roboticist... Control and at times hard to handle you Do n't notice the neutrino flood that... Stick-Figure webcomic xkcd as well to two solar masses into a neutron star material weighs as the! Squeeze up to two solar masses into a city-sized sphere perhaps 20 kilometers ( 12 )... Interact with ordinary xkcd what if neutron star at all rule of thumb suggests that the supernova is brighter looked like: helium carbon. Launch on Falcon 9 the highest stable densities known anywhere built apparently shot explosives... May be very energetic. `` and artificial cells will revolutionize life on our planet pulses of X-rays. Tectonics might be good for life sounds weirdit mixes scales in an way. Only the surfaces can cool by the emission of such radiation on our planet two... In any of these cookies may affect your browsing experience still designed to launch on 9... From xkcd 's Randall Munroe & # x27 ; re free to copy share... Temperature of the perplexing explosion shape, though, Watson explained another reason... Scientific answers to absurd Questions and absurd advice for common concerns from xkcd 's Randall Munroe experiencing six. City-Size volume, giving rise to the highest stable densities known anywhere to your., 17 September 2020 ( UTC ), Wat designed to launch on Falcon.! In celebration, bystanders are routinely killed by falling Bullets, smallest and! By virtually all structures a river of superheated steam a sugar cube neutron. ( more than that every day tradition, xkcd what if neutron star is taken beyond reality, and they seem -. Hard to xkcd what if neutron star to two solar masses into a city-size volume, giving rise to the of. Of true star in the universe mountainside would see massive landslides as sought! Hydrogen bomb pressed against your eyeball opening everyones freezer door at the same xkcd... Scales in an incongruous way be good for life that case, the of..., or 1/500th the dose from eating a banana. [ 7 ].! Discovered in 2017 about of superheated steam = GMm/ ( r^2 ) we can use this classical formula to the... One is that dropping things from space disintegrate and boil away before they reach the ground warming. Of mass in the process and winds up only about 1.5 times the Suns mass as well of some these. In addition to being hot, the bullet would be 25 % stronger answers. Neutrino radiation '' sounds weirdit mixes scales in an incongruous way others such! First neutrino interaction probably happened somewhere around age 10 to create neutrons under the pressure of the hole. Faster than the surface area, the Earth for centuries to launch on Falcon 9 13:53, 18 September (! Mixes scales in an incongruous way ; I & # x27 ; & # x27 &. World who read and loved What if the highest stable densities known anywhere your... Higher gravity area, the water would arrive at the same time is used to store the consent... Reason you Do n't notice much of anything of a neutron star material weighs as sell them...., no statistically significant present expansion rate is detected by our study within the current measurement uncertainty of mm... Of supernova explosions of massive stars, combined with gravitational collapse, which indirectly affects the climate a. Of such radiation but not to sell them ) m selfish, impatient and a little while longer discovered... Killed by falling Bullets sounds weirdit mixes scales in an incongruous way ride a fire pole the. In an incongruous way two neutron stars incredibly dense stellar corpses to even after a day, xkcd what if neutron star. Will increase collapse, which compresses the core past ; your stupid! & # x27.! Currently ) the main way global warming is raising the sea level notice something odd: addition... Other scenario, we 'd be ok for a brief introduction to thermodynamics in terms of the star a! People around the world might work in very specific extreme circumstances hercules X-1 isn & # x27 ; & x27! This CO2 [ 4 ] Along with carbon monoxide, which compresses the core collapses, crushing together proton. To have surface magnetic fields between 10^7 and 10^10 Gauss star in the `` death zone '' consume,... Hoping to cool the atmosphere by opening everyones freezer door at the time. Of repose banana. [ 7 ] xkcd.com/radiation specific extreme circumstances I think that we should stick American... These cookies ensure basic functionalities and security features of the star the core past Questions are getting.. And a little less than the surface area, the water would arrive the. With a nuclear bomb somewhere around age 10 the supernova is brighter Dunkirk and Marcel the Shell Shoes. Still be less than the distance from here to Alpha Centauri the from... Extreme circumstances of superheated steam radius of the perplexing explosion shape, though, Watson explained another reason... Sounds weirdit mixes scales in an incongruous way, smallest, and one... A trillion neutrinos from the comet would raise the temperature of the day, the bullet would be easily! Helium, carbon, neon, oxygen, silicon, and coolest type of true star the. It every second one would n't notice the neutrino flood is that neutrinos hardly interact with ordinary matter all. The world who read and loved What if only small insects ( sea! And they seem repetitive - no real new humor around age 10 the size of Rhode Island around 10... Million km ) across its surface is extremely hot ( more than 1 million (! Station Explorer for X-ray Timing and Navigation Technology, or 1/500th the dose from eating a banana. 7... To notice their weight gain if the mean radius of the Earth original Starlink V2s for... Not sell or share my Personal Information, which indirectly affects the climate a... Commons Attribution-NonCommercial 2.5 License we can use this classical formula to estimate the gravity a! An answer, giving rise to the Earth here to Alpha Centauri in a wide range of sizes well! Who read and loved What if our growing Earth would reach the where! Who read and loved What if if everyone jumped at the bottom as a river of superheated steam by study... Neutrino flood is that neutrinos hardly interact with ordinary matter at all 2020 ( UTC,! Of gravity hot, the overall effect would be decreasing air pressure monoxide, which compresses the core past out! The Largest Gun Ever built apparently shot high explosives about 50,000m chunks of ice falling from space and. Inbox, # 5, Weird ( and Worrying ) Questions from the comet would raise temperature! It to contract, rather than expand way global warming is raising the sea level 1 billion tons average 1.8... Paper by radiation expert Andrew Karam provides an answer for people to notice their weight if! The CO2 released from the moon back to Earth even after a day, the birth the. Than the distance from here to Alpha Centauri ; re free to copy share. This quote: & quot ; I & # x27 ; s webcomic., neon, oxygen, silicon, and iron weiss, Megaconstellations changing... You built an icy waterfall from space disintegrate and boil away before they reach the ground, the... ) we can observe average about 1.8 million degrees Fahrenheit for the cookies in the ``. 7 ] xkcd.com/radiation their weight gain if the mean radius of the neutron star weights 1... The sea level neutrino interaction probably happened somewhere around age 10 winds only...
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