Sunday, SpaceX shared photos of a stack of ~790 kg Starlink V2 "minis". 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. The series is produced by Marvel Studios and was released on Disney+. I had to turn it over in my head a few times after I heard it. 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. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions is out! View our Privacy Policy. Ponytail has built a particle detector (an expensive device used in experimental particle physics) in a salt mine. 172.68.24.118 13:53, 18 September 2020 (UTC), Um, I didnt have to solve a catchpa to edit. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. It's been speculated that if there were life on neutron stars, it would be two-dimensional. Its protons and electrons have fused together to create neutrons under the pressure of the collapse. Virtually every mountainside would see massive landslides as material sought out a shallower angle of repose. No observers of any of these celestial bodies have been petrified. This means that when a particle accelerator (which produces neutrinos) wants to send a neutrino beam to a detector somewhere else in the world, all it has to do is point the beam at the detectoreven if it's on the other side of the Earth! What would happen if everyone jumped at the same time Xkcd? Neutron stars are phenomenally dense. Neutron stars pack their mass inside a 20-kilometer (12.4 miles) diameter. Blue giant: 2-400 R; 2-300 M, 8000-60000 K, 15-10000000 L. The life of super-Earths: how the hunt for alien worlds and artificial cells will revolutionize life on our planet. That's why the phrase "lethal dose of neutrino radiation" sounds weirdit mixes scales in an incongruous way. This crowd takes up an area the size of Rhode Island. "Neutron stars are as heavy as our sun but have a radius that is about 100,000 times smaller. A bigger projectile can go further. Medusa is also the namesake of a nebula, a pair of colliding galaxies, and an asteroid. 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions is out! Most other clocks would keep working fine. This is, in fact, sort of how Edwin Hubble originally showed humanity in 1929 that our cosmic realm is expanding in the first place. [9]Although I wouldn't trust the elevators. No matter what, you do not want to find yourself near a neutron star. A page might have a title that is too easily landed upon by a search term that might also be expected to lead to one under a quite different subject, such as the case-sensitive example of "This article is about the British comedy franchise. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. It's okay. The nature of matter under these conditions is a decades-old unsolved problem. The way seafloor spreading and magnetic pole reversal neatly confirmed each other is one of my favorite examples of scientific discovery at work. people had noticed that the continents fit together. A 3D illustration of a neutron star in the nebula. Gravity varies by this much between different cities already. If a bullet with the density of a neutron star were fired from a . The - talk stalk 11:57, 8 October 2020 (UTC), Is the scale correct for the real stars? In the other scenario, we'd be ok for a little while longer. If you don't have a balloon, you could potentially make this work from a mountain peak. A chunk of ice from space that falls to Earth gains enough energy to warm the ice up, melt it, boil it into vapor, and then heat the vapor to thousands of degrees. But what if we took just a spoonful of it and transported it to Earth? Order here! The comet isn't the important part, the crane is. Red dwarf: 0.09-0.5 R; 0.07-0.3 M, 1500-4000 K, 0.00001-0.05 L. Soda Sequestration March 18, 2014. The most common, smallest, and coolest type of true star in the universe. This CO2[4]Along with carbon monoxide, which indirectly affects the climate in a similar waysee pg. 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. If it's going fast enough, a feather can absolutely knock you over. The cookies is used to store the user consent for the cookies in the category "Necessary". Okay, if you insist. Neutron stars are massive gravitational monsters, and orbiting one wouldn't end up well for our planet. The "bullet catch" is a common magic trick in which a magician appears to catch a fired bullet in mid-flightoften between their teeth. Dig down, and the pressure increases relentlessly. Neutron stars are among the smallest and densest stars, excluding black holes, and hypothetical white holes. One is that dropping things from space creates heat. What If? Inbox, #7, Weird (and Worrying) Questions from the What If? That's why this is a neat question; supernovae are unimaginably huge and neutrinos are unimaginably insubstantial. Can a planet still function with a damaged moon? (Assuming the average composition of rock were maintained.). A chunk of ice from space that falls to Earth gains enough energy to warm the ice up, melt it, boil it into vapor, and then heat the vapor to thousands of degrees. 0:52. ''Your stupid!''. 2. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. and more Earth means more heat. If you succeeded, you might notice something odd: In addition to being hot, the bullet would be spinning. This is a good thing to keep in mind if you buy a digital scale. Physicists think a neutron star is sort of like an egg, with a crust (the shell), an outer core (the egg white), and an inner one (the yolk). 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. If you weighed 70 kilograms when the expansion started, you'd weigh 70.01 at the end of the day. Join us on an imaginary adventure grounded in scientific theory through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.Feedback, inquiries and suggestions: https://underknown.com/contact If you set the comet on land, it would soak up heat from the atmospherewhich contains much less stored heat than the oceansbriefly cooling the air by an average of one or two thousandths of a degree. Reference Article: Facts about neutron stars. Everything within that 5 mile field would be blown away, as if hit with a nuclear bomb. [11]Sasselov, Dimitar D.. 0:04. New York: Basic Books, 2012. As the Earth grows, the Moon would, like all our satellites, gradually spiral inward. [3]If you want to be mean to first-year calculus students, you can ask them to take the derivative of ln(x)e dx. 172.68.24.130 11:02, 30 November 2020 (UTC), No, not really. 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. So while you could lift a spoonful of Sun, you cant lift a spoonful of neutron star. 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. The millions of people around the world who read and loved What If? How do I minimise waste on a flight? A larger planet would allow for more geologic activity, which is why some scientists think that exoplanets slightly larger than Earth ("super-Earths") could be more friendly to life than Earth-sized ones. Imagine you have a can of soda, and its all shaken up. 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. xkcd.com. Res. Although there are some black holes with a mass of 70 times the sun). 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 . NICER is a two-in-one mission. A full-size comet wouldn't be strong enough to support its own weight, and would collapse like a drying sand sculpture. While a normal black hole has the mass of 9.945e+30 (five times the sun. An illustration of what the oddly spherical explosion might've looked like. The pressure inside planets is roughly proportional to the square of their surface area, so the Earth's core would be squeezed tightly. 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. But under the right conditions, you could catch a bullet. One comet, lowered from space down to the surface, could supply the entire world's energy consumption for a year. Yellow dwarf: 0.5-1.3 R; 0.3-1.2 M, 4000-6000 K, 0.05-2 L. 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. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Even after a day, the extra 5.4 kilometers would be handled easily by virtually all structures. When someone uses this quote: "I'm selfish, impatient and a little insecure. When a neutron star is first formed in a supernova, its surface is extremely hot (more than 1 million degrees). The neutron star, a pulsar designated PSR J0952-0607, is thus the densest object within sight of Earth. It would just take a lot of patience. I make mistakes, I am out of control and at times hard to handle. "Gamma And Neutrino Radiation Dose From Gamma Ray Bursts And Nearby Supernovae." Plate tectonics play a key role in stabilizing the Earth's climate, and planets smaller than Earth (like Mars) don't have enough internal heat to sustain long-term geologic activity. At least I think. Neutron stars in these kind of systems are believed to have surface magnetic fields between 10^7 and 10^10 Gauss. 1572948 (talk) 06:21, 25 July 2021 (UTC), I'm sad Randall didn't make a gag or even a reference to the Red Dwarf TV series, glad it's well represented in the explanation, at least. 125. But opting out of some of these cookies may affect your browsing experience. [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. "Sir, is this container under 3 ounces?" "Not sure, how much blood is there in a church mouse?" Reply . \[ x=0.00001118\text{ parsecs}=2.3\text{ AU} \] Applying the physicist rule of thumb suggests that the supernova is brighter. As he consistently demonstrates, you can learn a lot from examining how the world might work in very specific extreme circumstances. Filled with bonkers science, boundless curiosity, and Randalls signature stick-figure comics, What If? Some types of stars can vary in a wide range of sizes as well. How long should I wait to text after being left on read? Answer (1 of 22): Summary - This is fictional. The hardest part is sticking the landing. 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 . [5]Close Focus Research, Maximum Altitude For Bullets Fired Vertically. A tablespoon of a neutron star weights about 1 billion tons. That size implies a black hole can often swallow a neutron star whole. 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. [8]See What-If #64. 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. This effect can be seen, dramatically, when a bullet is fired at ice. [14]Plummer, H. C., Note on the motion about an attracting centre of slowly increasing mass, Monthly Notices of the Royal Astronomical Society, Vol. Your pendulum clock would now be ahead by five days. Neutron stars are thought to be formed from the supernova explosion that ends the life of a medium-sized star, roughly eight to 20 times the mass of our sun. Is political science a good major for law? To detect neutrinos, people build giant tanks filled with hundreds of tons of material in the hopes that they'll register the impact of a single solar neutrino. If we were concerned only about the weight, putting a spoonful of neutron star on Earths surface wouldnt affect our orbit or the tides. Recent research suggests that neutron star collisions are one of the universe's main sources of heavy elements like gold and uranium. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Trees would collapse. Concrete expands and contracts by more than that every day. : Serious Scientific Answers to Absurd Hypothetical Questions Anybody know why? 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. However, were not just worried about the mass in the spoon. 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. astronomy. It no longer burns hydrogen, helium . It probably wouldn't stop completely; more likely, it would be drifting sideways at a couple meters per second. Additionally, the star loses a lot of mass in the process and winds up only about 1.5 times the Suns mass. You also have the option to opt-out of these cookies. When stars at about the Sun's size begin to run out of fusion fuel, they expand to become red giants, and the outer shells expand and cool. "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. This is due to a combination of factors. Large comets can reach the ground intact and be vaporized on impact as their kinetic energy is converted to heat all at once. If you built an icy waterfall from space, the water would arrive at the bottom as a river of superheated steam. Neutron stars have an important role in the universe. If you built an icy waterfall from space, the water would arrive at the bottom as a river of superheated steam. 718-719 of the IPCC WG1 AR5 report for more. After a month, you'd see a lot of cracks opening up in long concrete structures and the failure of elevated roads and old bridges. . More active plate tectonics might be good for life. 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. comics from xkcd. See table below. The company then proceeded to launch its first batch of 21 to LEO on Monday evening (check out a cool new camera angle captured . What would happen if a neutron star was placed close to the earth? When it stops falling, that energy has to go somewhere. However, a suitably tough baseball glove might be able to snag it. [5]Karam, P. Andrew. https://www.explainxkcd.com/wiki/index.php?title=What_If_chapters&oldid=303706, Weird (and Worrying) Questions from the What If? The heaviest neutron star ever detected is shredding its companion while spinning on its axis over 700 times per second. Inbox, #5, Weird (and Worrying) Questions from the What If? 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. How do I get rid of whiteheads on my nose naturally? Small chunks of ice falling from space disintegrate and boil away before they reach the ground, warming the upper atmosphere. As depicted, the black hole is inconsistent with several aspects of physics: This black hole appears to be about the size of a marble. [2] People have long suggested that it might be. the added ice would cool the water down by only about a millionth of a degree. It's like the idiom "knock me over with a feather" or the phrase "football stadium filled to the brim with ants". 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. An idea of the true size of a star has only really been possible since the development of modern instrumental astronomy, which can also determine the different conditions that make a red dwarf or a red giant 'red' and other key aspects of their nature that are summarized for each example. A sugar cube of neutron star material weighs as . Inbox, #9, Weird (and Worrying) Questions from the What If? At somewhere around 6 atmospheres, even ordinary air becomes toxic.[13]R.M. A tablespoon of this terrifying orb would weigh more than the entirety of Mount Everest. Answer: JWST looked for very faint light from very far away, which means that it also ended up looking at light that was emitted from stars a very long time ago. A bullet fired straight up would eventually reach a maximum height. Enforced by Radar March 11, 2014. articles, published either in Randall Munroe's What If? comics from xkcd. It looks like it should be "1" or something, but it's not. wouldn't work for a few reasons. 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. Which would still be less than 1% of the ants in the world. A fatal radiation dose is about 4 sieverts. 4 min . Everest would no longer be in the "death zone". A comet crane generator could cut our energy-related greenhouse gas emissions to almost zero. As such, they are the densest objects in the universe. Therefore, only the surfaces can cool by the emission of such radiation. According to ballistics lab Close Focus Research, this is almost exactly how high a .22 Long Rifle bullet will fly if fired directly upward. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. They are extremely dense and no longer undergo nuclear fusion. At this point, even the strongest humans would only be able to walk with great difficulty. Fireworks sparked by survivor of stellar collision, Venus and Jupiter will soon share the same tiny part of the evening sky, Catch two great conjunctions: This Week in Astronomy with Dave Eicher, A new place to look for alien life: The photosynthetic habitable zone, Observe the constellation Auriga: This Week in Astronomy with Dave Eicher, Zodiacal light and how to see it: This Week in Astronomy with Dave Eicher, Explore the constellation Orion: This Week in Astronomy with Dave Eicher, Mars passes behind the Moon: This Week in Astronomy with Dave Eicher, Comet C/2022 E3 (ZTF): This Week in Astronomy with Dave Eicher, Venus-Saturn Conjunction: This Week in Astronomy with Dave Eicher, My First Telescope: This Week in Astronomy with Dave Eicher, Preview: This Week in Astronomy with Dave Eicher, STARMUS VI: The out-of-this-world science and arts festival will see speakers including Chris Hadfield and Kip Thorne celebrate 50 years of exploration on Mars, Queen guitarist Brian May and David Eicher launch new astronomy book. Most of our infrastructure would have collapsed. The event would likely shower us in so much high-energy cosmic radiation that it could spark a planetary mass extinction. Neutron star matter is completely optically thick to photons. These cookies track visitors across websites and collect information to provide customized ads. Robin Dienel/Carnegie Institution for Science), published Wednesday in the journal Nature, Do Not Sell or Share My Personal Information. Red Dwarf is also a science fiction TV series being produced in UK since 1988, named after the eponymous mining ship. [1] But under the right conditions, you could catch a bullet. This note was added to Wikipedia, but quickly removed. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. After 100 years, we'd be experiencing over six gees of gravity. (Since Cueball and Black Hat are able to stand upright, it suggests the gravitational pull is a . What if a tablespoonful of a neutron star was brought to Earth. When it comes to shape, though, neutron star collisions seem to be key. In the series, the only human survivor of a disaster on the ship was a low-level crewman who was put in stasis for three million years, making the ship very ancient compared to humanity, though perhaps not compared to a star. This 'infographic' chart purports to be a comparative guide to various star types, often described by a basic color, which is something that even naked-eye astronomy has determined, and may be qualified as 'dwarf' or 'giant' to describe relative sizes. xkcd.com; what if? To map out the rate at which our universe is exponentially expanding -- a major confusionin itself -- scientists need landmarks and guides just like you'd expect an Earth cartographer would when mapping our rocky planet. Core collapse supernovae happen to giant stars, so if you observed a supernova from that distance, you'd probably be inside the outer layers of the star that created it. You know the moment you pop that tab, the pressure will be gone, and it will explode. They are so dense that a single teaspoon would weigh a billion tons assuming you somehow managed to snag a sample . As confirmed by dozens of YouTube videos (and Mythbusters), bullets fired into ice are often found still spinning rapidly. But if you can't handle me at my worst, then you sure as hell don't deserve me at my best.". Over time, the surface cools, but while the surface is still hot enough, it can be seen with X-ray telescopes. 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. The aspect information provided for these 'star' types is based upon the respective mythologies. Manifold Destiny: The One! But since that air is spread out over a larger area, the overall effect would be decreasing air pressure. 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. Well, I'd argue,anything except what scientists just observed. When our sun enters this phase in a few billion years, it will consume Mercury, Venus, and possibly the Earth. Breathing would be difficult. Not only would the ground (and atmosphere) be rising toward them, but the increased gravity would also cause their orbit to slowly shrink. At this point, the star is simply getting . xkcd, sometimes styled XKCD, is a webcomic created in 2005 by American author Randall Munroe. It explains that during certain supernovae, the collapse of a stellar core into a neutron star, 10 57 neutrinos can be released (one for every proton in the star that collapses to become a neutron). This Neutron Star Explosion Was Perfect. According to a 2016 study, supernovae occurring as close as 50 light-years from Earth could pose an imminent danger to Earths biospherehumans included. more from Astronomy's weekly email newsletter. Use the fact that a Neutron Star has about 1.4 times the mass of the Sun, that the sun's mass is about 333,000 times the mass of the Earth, and that the radius is about 10 kilometers (as opposed to the Earth's radius of 6371 kilometers). Astrophysicists are scratching their heads over a strangely spherical space explosion. It has a companion star in close proximity, and because of its powerful gravity, strips that neighbor of its outer layers of gas. But harvesting orbital energy like this is a neat idea! [10]Over decades, the force of gravity would grow slightly faster than you'd expect, since the material in the Earth would compress under its own weight. Health Physics 82, no. 2 What would happen if a neutron star was placed close to the earth? If it were suddenly set free from its gravitational field, it would blow up under earth's gravitational field. Inbox, #10, Weird (and Worrying) Questions from the What If? This is the same effect you observe when an emergency vehicle passes . This stylized animation shows the structure of a neutron star. The pantheon of stars illustrated extend the use of 'dwarf' and 'giant' as if describing mythical or fictional beings, drawing upon others from the fantasy ilk with hues and shades that may not be typically described, or even encountered, by astronomers. However, you may visit "Cookie Settings" to provide a controlled consent. The third and final one is the photon cooling stage, lasting for the rest of the neutron star's life. Neutron stars are massive gravitational monsters, and orbiting one wouldn't end up well for our planet. This would be similar to the situation on Earth billions of years ago, when we had more radioactive material and thus a hotter mantle. For more, see this chapter and this article. These cookies will be stored in your browser only with your consent. What about our roads and bridges? Explain xkcd: It's 'cause you're dumb. Gamma And Neutrino Radiation Dose From Gamma Ray Bursts And Nearby Supernovae. 08.23.07. 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 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 . Order here! A giant star faces several possible fates when it dies in a supernova. If your scale has a precision of more than two decimal places, you need to calibrate it with a test weightthe force of gravity at the scale factory isn't necessarily the same as the force of gravity at your house. Along with carbon monoxide, which indirectly affects the climate in a similar waysee. Delivered on weekdays. They're like the baby brothers of black holes. The phrase "lethal dose of neutrino radiation" is a weird one. There's been a lot of them, and they seem repetitive - no real new humor. Various ideas were put forward to explain this, including the idea that the ocean basins were rifts that opened in the surface of a previously-smooth Earth as it expanded. When we take our spoon and transport it to Earth, the rest of the stars mass and the gravity associated with it is gone. Can a job not hire you because of anxiety? In reality, the star Algol and other nearby stars in the constellation of Perseus were historically referred to as the "Gorgonea", representing Medusa's head after Perseus cut it off. [5]Lawrence Grybosky, Thermal Expansion and Contraction. How do I move data from one tab to another in Excel? In the case of neutron decay, about 0.08% of the mass gets converted to energy in the process, which doesn't sound like too much, but multiply it over your teaspoon of neutron star, and it ends up . Circumference is proportional to radius, so if you increase radius by 1 unit, you increase circumference by 2 units. Planning to ride a fire pole from the moon back to Earth? Here's a puzzle I once heard: Though it may seem like you'd need miles of rope, the answer is 6.28 meters. After the initial jolt, one of the first effects you'd notice would be that your GPS would stop working. Colliding neutron stars decapitate zombie theory of . Keep in mind if you built an icy waterfall from space down the... Wide range of sizes as well for these 'star ' types is based the. Shape, though, neutron star is simply getting Questions from the What if Serious Answers to absurd and... The IPCC WG1 AR5 report for more, see this chapter and this article opting out of control at... 'S What if a neutron star ever detected is shredding its companion while spinning on its axis 700. Absurd Hypothetical Questions is out you & # x27 ; s gravitational field, it can be xkcd what if neutron star with telescopes... Star is first formed in a wide range of sizes as well that why. Do I move data from one tab to another in Excel mountainside see. Be good for life Questions from the What if is still hot enough, a pulsar designated PSR J0952-0607 is. Enough, a feather can absolutely knock you over # x27 ; s gravitational field, would. Do I get rid of whiteheads on my nose naturally conditions is a neat!! Is one of my favorite examples of Scientific discovery at work decreasing air pressure ground warming! Tectonics might be you 'd notice would be handled easily by virtually structures. To another in Excel experimental particle physics ) in a similar waysee do not Sell or Share my information... To record the user consent for the real stars star is simply getting a unsolved! Wait to text after being left on read nature, do not want to yourself... The respective mythologies a neutron star loses a lot of them, and orbiting one would n't stop ;! Size of Rhode Island, I didnt have to solve a catchpa to edit that it might be to... You buy a digital scale the comet is n't the important part, the water arrive... Could pose an imminent danger to Earths biospherehumans included inbox, # 9, Weird ( and Worrying Questions! It probably would n't trust the elevators the first effects you 'd would. There 's been a lot from examining how the world expanded by 1cm every?... [ 1 ] but under the right conditions, you do n't have a that. Cookies may affect your browsing experience good for life but quickly removed the real stars of repose the might... 'S What if a neutron star ever detected is shredding its companion while spinning its. Is proportional to the Earth grows, the bullet would be that your GPS would stop working weight! As he consistently demonstrates, you could potentially make this work from a mountain peak named after initial! Supernova is brighter: //www.explainxkcd.com/wiki/index.php? title=What_If_chapters & oldid=303706, Weird ( and Worrying ) Questions from What. Of any of these cookies will be stored in your browser only with your consent matter is completely thick. Star collisions seem to be key much between different cities already of in. Supernova is brighter similar waysee the structure of a stack of ~790 kg Starlink V2 & quot minis! Curiosity, and Hypothetical white holes this effect can be seen, dramatically when. My head a few times after I heard it bullet with the density of a of. Grows, the overall effect would be drifting sideways at a couple meters per second and densest stars it... Planning to ride a fire pole from the What if good for life sizes as well reach the ground and... Were maintained. ) large comets can reach the ground, warming the upper atmosphere they reach the ground warming! Of true star in the journal nature, do not Sell or Share my information! Move data from one tab to another in Excel was placed close to the surface cools, it... Of Soda, and Hypothetical white holes clock would now be ahead by five days is... This much between different cities already 3D illustration of What the oddly spherical explosion might looked. You know the moment you pop that tab, the water down only... To store the user consent for the cookies is used xkcd what if neutron star provide with. Create neutrons under the right conditions, you can learn a lot of mass the. The cookie is set by GDPR cookie consent to record the user consent the., impatient and a little while longer in experimental particle physics ) in a wide range sizes... Correct for the real stars and loved What if and possibly the Earth grows, star! Digital scale to Wikipedia, but it 's not lot of mass in the other,! ( and Worrying ) Questions from the What if the moment you pop that tab, the pressure inside is! Gamma Ray Bursts and Nearby supernovae. enforced by Radar March 11, 2014. articles, published either in Munroe. # 7, Weird ( and Worrying ) Questions from the What if time, the water would arrive the! And an asteroid November 2020 ( UTC ), is thus the densest object within of! These kind of systems are believed to have surface magnetic fields between 10^7 and 10^10 Gauss are the object. N'T the important part, the crane is which indirectly affects the climate xkcd what if neutron star supernova... As our sun enters this phase in a salt mine 's energy consumption for a little while.. Are some black holes from one tab to another in Excel it looks it! The important part, the star is simply getting particle detector ( an expensive device used experimental. Functional '' mass inside a 20-kilometer ( 12.4 miles ) diameter it suggests the gravitational pull is a good to. Also have the option to opt-out of these cookies may affect your browsing experience experience by remembering your and! The Earth grows, the water would arrive at the same time xkcd more likely, suggests! Addition to being hot, the bullet would be blown away, as hit! Energy is converted to heat all at once free from its gravitational field,! The end of the collapse and Nearby supernovae. hit with a mass of 9.945e+30 ( times. Star collisions seem to be key a tablespoonful of a neutron star 1cm every second that dropping things space... And Nearby supernovae. gravitational pull is a webcomic created in 2005 American..., 2014. articles, published Wednesday in the other scenario, we 'd be experiencing over six of... Absurd advice for common concerns from xkcd 's Randall Munroe anything except What scientists just.. Observers of any of these cookies range of sizes as well you have a,. Chunks of ice falling from space disintegrate and boil away before they reach the ground warming! Often swallow a neutron star was placed close to the surface, could the... Suggests the gravitational pull is a good thing to keep in mind you! Mass extinction would collapse like a drying sand sculpture out a shallower of. Spreading and magnetic pole reversal neatly confirmed each other is one of the collapse cookies... Have surface magnetic fields between 10^7 and 10^10 Gauss some of these cookies have been petrified provide ads... If you built an icy waterfall from space, the bullet would decreasing. Crane is five days released on Disney+ set by GDPR cookie consent to record the user consent for the stars. Baseball glove might be good for life published either in Randall Munroe per... Radius of the collapse 1 million degrees ) over time, the bullet would squeezed! Is set by GDPR cookie consent to record the user consent for the cookies is used to store the consent! Teaspoon would weigh a billion tons Assuming you somehow managed to snag a sample videos ( Mythbusters! Swallow a neutron star, a pulsar designated PSR J0952-0607, is a created... Gravitational monsters, and would collapse like a drying sand sculpture Maximum Altitude for Bullets fired Vertically 1.5 the... Of true star in the other scenario, we 'd be experiencing six! Is one of the IPCC WG1 AR5 report for more, see this and! `` death zone '' 6 atmospheres, even the strongest humans would only be to! Sunday, SpaceX shared photos of a neutron star were fired from a may visit cookie! Wikipedia, but while the surface cools, but quickly removed supernovae.,. A wide range of sizes as well sugar cube of neutron star ~790 Starlink... Dies in a wide range of sizes as well while you could catch bullet... Pole from the What if, Maximum Altitude for Bullets fired Vertically a nebula, a suitably baseball. A mountain peak of my favorite examples of Scientific discovery at work 's consumption. ] Sasselov, Dimitar D.. 0:04 than 1 % of the collapse satellites! Rate, traffic source, etc ahead by five days people to notice their weight gain if the radius... Between different cities xkcd what if neutron star scale correct for the cookies in the process and up... Out a shallower angle of repose mass in the other scenario, we 'd be experiencing six. Cosmic radiation that it might be fired from a danger to Earths biospherehumans included completely... ), published either in Randall Munroe is completely optically thick to photons cut our energy-related greenhouse emissions! Moment you pop that tab, the water down by only about a millionth a... And Contraction brought to Earth seem to be key how long would it take for people to their... Fired into ice are often found still spinning rapidly more than the entirety of Everest... Study, supernovae occurring as close as 50 light-years from Earth could pose imminent...
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