What about our roads and bridges? Want CNET to notify you of price drops and the latest stories? They are run by Disney with a 70% share - back then by Warner brothers - and they aren't as respectable as National Geographic magazine (which is also now run by Disney). The story icomes from a National Geographic video. feed 2022 . (Full text here.) 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. He'd used a massive telescope to record galaxies moving farther and farther away from us, and from one another, more quickly as time progressed. Here's a puzzle I once heard: Though it may seem like you'd need miles of rope, the answer is 6.28 meters. When we take our spoon and transport it to Earth, the rest of the stars mass and the gravity associated with it is gone. Okay, so we just need thousands of comets, right? \[ 0.5\text{ nanosieverts} \times\left ( \frac{1\text{ parsec}}{x}\right )^2 = 5\text{ sieverts} \] Before publishing the first what if? Explanation []. After the initial jolt, one of the first effects you'd notice would be that your GPS would stop working. 2.9K. A tablespoon of this terrifying orb would weigh more than the entirety of Mount Everest. 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. 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. articles, published either in Randall Munroe's What If? How do I move data from one tab to another in Excel? The #1 New York Timesbestselling author of What If? Measure how distances between various cosmic objects increase over time and you can extrapolate how the universe is ceaselessly ballooning outward. Neutron stars are massive gravitational monsters, and orbiting one wouldn't end up well for our planet. Paint the Earth February 18, 2014. 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 dynamics of really huge rocky planets aren't often analyzed, since there's no obvious way that they could form; anything that large will have enough gravity to gather hydrogen and helium during planet formation and become a gas giant. Necessary cookies are absolutely essential for the website to function properly. Inbox, #4, Weird (and Worrying) Questions from the What If? 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. Unfazed by absurdity, Randall consults the latest research on everything from swing-set physics to airplane-catapult design to clearly and concisely answer his readers questions. 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 3D illustration of a neutron star in the nebula. After years had passed, the top of Mt. As he consistently demonstrates, you can learn a lot from examining how the world might work in very specific extreme circumstances. People have long suggested that it might be. "Supernovas" is also fine. shooter is at sea level and catcher is up a mountain at the extreme range of the gun. Order here! 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. All rights reserved. As gravity increases, then air gets heavier. is based on his blog of the same name that answers unusual science questions from readers in a light-hearted way that is scientifically grounded. And by that point, you may find you've attracted some attention. Red dwarf: 0.09-0.5 R; 0.07-0.3 M, 1500-4000 K, 0.00001-0.05 L. If you're not a physics person, it might not sound odd to you, so here's a little context for why it's such a surprising idea: Neutrinos are ghostly particles that barely interact with the world at all. Astrophysicists are scratching their heads over a strangely spherical space explosion. The typical density of neutron stars is . 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. Sure, it would release a little CO2, but it would be nothing compared to the pollution from our current sources of energy. We do not sell, rent or trade our email lists. "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. Inbox, #8, Weird (and Worrying) Questions from the What If? Everest would no longer be in the "death zone". 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. According to ballistics lab Close Focus Research, this is almost exactly how high a .22 Long Rifle bullet will fly if fired directly upward. Res. Anybody know why? Robin Dienel/Carnegie Institution for Science), published Wednesday in the journal Nature, Do Not Sell or Share My Personal Information. Can a planet still function with a damaged moon? 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. "No one expected the explosion to look like this. Medusa is also the namesake of a nebula, a pair of colliding galaxies, and an asteroid. Well, if you hooked it up to a generator, you could use the slowly-descending comet to produce electricity. How close would you have to be to a supernova to get a lethal dose of neutrino radiation? 162.158.158.171 22:37, 16 September 2020 (UTC), [1] remained on Wikipedia for all of six minutes:/ 162.158.62.149 23:40, 16 September 2020 (UTC), Ten minutes, surely? Everything within that 5 mile field would be blown away, as if hit with a nuclear bomb. Breathing would be difficult. Breathing in this situation would be difficult. Which would still be less than 1% of the ants in the world. For more, see this chapter and this article. This channel runs preposter. Not only would we be unable to move around to find food, but our hearts would be unable to pump blood to our brains. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Answer (1 of 22): Summary - This is fictional. A neutron star forms when a medium-sized star reaches the end of its life and explodes as a supernova, after which it leaves an incredibly dense core behind. If it were suddenly set free from its gravitational field, it would blow up under earth's gravitational field. 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. If a bullet with the density of a neutron star were fired from a . These stellar beasts, made mostly of neutrons, are basically ultra-dense cosmic corpses roaming around space and, with incomprehensibly strong gravitational fields, torturing everything in their paths. "Sir, is this container under 3 ounces?" "Not sure, how much blood is there in a church mouse?" Reply . 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. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Article title. I was raised, Don't do this. 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. 08.23.07. 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions is out! New York: Basic Books, 2012. What If? What If? The cookies is used to store the user consent for the cookies in the category "Necessary". Gamma And Neutrino Radiation Dose From Gamma Ray Bursts And Nearby Supernovae. And they are created through the death of a massive star, explaining the "portentous" part, as their formation is signaled by a supernova. The title text is in the style of a Wikipedia page's hatnote / reference note. There's been a lot of them, and they seem repetitive - no real new humor. Even after a day, the extra 5.4 kilometers would be handled easily by virtually all structures. This page was last edited on 30 December 2022, at 22:23. Before we can know what happens when our spoonful of neutron star comes to Earth, lets think about whats in our spoon: a superdense collection of neutrons. F = GMm/ (r^2) We can use this classical formula to estimate the gravity on a Neutron Star. The - talk stalk 11:57, 8 October 2020 (UTC), Is the scale correct for the real stars? Delivered on weekdays. 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. 16. :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? still have questions, and those questions are getting stranger. Most of the Earth's heat is provided by radioactive decay of minerals in the crust and mantle,[12]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. To avoid another Drain the Oceans scenario, we'll assume the ocean expands, too. [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. 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. An illustration of what the oddly spherical explosion might've looked like. As the Earth grows, the Moon would, like all our satellites, gradually spiral inward. [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. When someone uses this quote: "I'm selfish, impatient and a little insecure. After 40 years, Earth's surface gravity would have tripled. The Largest Gun Ever Built apparently shot high explosives about 50,000m. 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/ A normal star of that mass would be more than 1 million miles(1.6 million km) across. Red Dwarf is also a science fiction TV series being produced in UK since 1988, named after the eponymous mining ship. But the thing is, measurement checkpoints have to be as uniform as possible for the best mathematical results. [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. A spherical explosion [provides] much greater precision in the measurement.". Overwhelmingly Large Telescope xkcd comics i enjoy . Filled with bonkers science, boundless curiosity, and Randall's signature stick-figure comics, What If? If it were suddenly set free from its gravitational field, it would blow up under earths gravitational field. But all that matter has been compressed to an object about 10 miles (16 kilometers) across. 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. How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? 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. It premiered on August 11, 2021 and concluded on October 6, 2021. This is a good thing to keep in mind if you buy a digital scale. Neutron stars are made in supernova explosions which are giant neutrino factories. 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. 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 . . It makes no sense that it is spherical, like a ball. : Serious Scientific Answers to Absurd Hypothetical Questions Lett., 38, L13304, doi:10.1029/2011GL047450. 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! articles, published either in Randall Munroe's What If? In short, the answer to Grey's question is yes 500 mph winds would send you flying through the air. Everest. The aspect information provided for these 'star' types is based upon the respective mythologies. The nature of matter under these conditions is a decades-old unsolved problem. 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. 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. Although there are some black holes with a mass of 70 times the sun). comics from xkcd. We can use the Doppler effect to measure the orbital motion of a pulsar. The pressure inside planets is roughly proportional to the square of their surface area, so the Earth's core would be squeezed tightly. Hoping to cool the atmosphere by opening everyones freezer door at the same time? although it still periodically makes the rounds on YouTube. Rocket Golf February 25, 2014. The mass of the sun is 1.989 10 30 kg while the mass of the moon is 7,348 * 10 22 kg. 718-719 of the IPCC WG1 AR5 report for more. 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? Well, I'd argue,anything except what scientists just observed. You'd probably notice the weight gain, and you'd definitely notice the failure of roads, bridges, power lines, satellites, and undersea cables. This heat energy would be about 100 times greater than the energy needed to bring even a very cold comet up to room temperature, so a comet falling from space would heat the Earth 100 times more than it cooled it. Feb. 17, 2023 10:28 a.m. PT. More active plate tectonics might be good for life. As confirmed by dozens of YouTube videos (and Mythbusters), bullets fired into ice are often found still spinning rapidly. The idea of neutrino radiation damage reinforces just how big supernovae are. Mount Thor, which you may remember from question #51, features a vertical drop of 1,250 meters. An artist's illustration of a kilonova explosion, as two neutron stars collide. While a normal black hole has the mass of 9.945e+30 (five times the sun. 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. 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions is out! Statistically, my first neutrino interaction probably happened somewhere around age 10. It explains that during certain supernovae, the collapse of a stellar core into a neutron star, 1057 neutrinos can be released (one for every proton in the star that collapses to become a neutron). However, a suitably tough baseball glove might be able to snag it. Most of our infrastructure would have collapsed. Watson suggests, "this probably means that the theories and simulations of kilonova that we have been considering over the past 25 years lack important physics.". She covers climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical thought experiments. The detonation of a hydrogen bomb pressed against your eyeball? 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. 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 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. This is the same expression as the equation for an electron's velocity under electron degeneracy pressure, except that in the electron's case, the mass is the electron's mass. would change Earth's radiation balance, trapping heat near the surface and raising the planet's temperature. Order here! Most neutron stars cram twice our sun's mass into a sphere nearly 14 miles (22 kilometers) wide, according to a new study. Explain xkcd: It's 'cause you're dumb. At this point, astronauts on the ISS would start getting worried. Its protons and electrons have fused together to create neutrons under the pressure of the collapse. The Earth is not, currently, expanding. This is probably a case of artistic license. This theory was never very widespread,[3]It turns out it's kind of dumb. Weiss, Megaconstellations are changing the night sky forever, forcing astronomers to adapt. After 100 years, we'd be experiencing over six gees of gravity. The neutron star, a pulsar designated PSR J0952-0607, is thus the densest object within sight of Earth. What would happen if everyone jumped at the same time Xkcd? Tungsten Countertop . Magical storks deliver babies, magical cranes deliver comets. It probably wouldn't stop completely; more likely, it would be drifting sideways at a couple meters per second. 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. This is a list of What If? It would instantly expand to about 5 miles in diameter. 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. When wateror anything elsefalls, it gains kinetic energy. However, you may visit "Cookie Settings" to provide a controlled consent. 2. 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. A blur, mostly. 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. (Stars with higher masses will continue to collapse into stellar-mass black holes.). 66, p.83 After several centuries, it would be close enough to the swollen Earth that the tidal forces between Earth and the Moon would be stronger than the gravitational forces holding the Moon together. Red giant: 3-2000 R; 0.3-50 M, 2500-4000 K, 0.3-650000 L. "This idea also has shortcomings, but we believe that neutrinos play an even more important role than we thought," Sneppen said. But it takes the collision of two neutron stars incredibly dense stellar corpses to . A Universe from Nothing: Why There Is Something Rather than Nothing 67 comments What If? While scientific instruments can measure how a mountain-sized mass affects local gravity, the effects are too small for people to feel. The cause of the collapse would be the expanding ground below them, not the increased gravity. A neutron star is the remnant of a massive star (bigger than 10 Suns) that has run out of fuel, collapsed, exploded, and collapsed some more. Each one will cool the air a little bit. But opting out of some of these cookies may affect your browsing experience. But since that air is spread out over a larger area, the overall effect would be decreasing air pressure. Generally, it turns into heat. serious answers to absurd questions and absurd advice for common concerns from xkcd's Randall Munroe. 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. "Supernovii" is discouraged. Inbox, #3, Weird (and Worrying) Questions from the What If? The star starts fusing helium to carbon, like lower-mass stars. Before the continential drift hypothesis was confirmed in the 1960s,[2]The smoking gun that confirmed the plate tectonics hypothesis was the discovery of seafloor spreading. That was unexpected. The neutron stars we can observe average about 1.8 million degrees Fahrenheit, compared to about 9,900 degrees Fahrenheit for the Sun. 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. At the start of the scenario, the entire Earths population has been magically transported together into one place. Neutron stars are phenomenally dense. xkcd.com. 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. 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. This is the same effect you observe when an emergency vehicle passes . Stretching a 40,000-kilometer line an extra 6.28 meters is pretty negligible. Reminds me of an XKCD joke. At that speed, as long as you were in the right place at the right time, you could snatch it out of the air. Only their immense gravity keeps the matter inside from exploding; if you brought a spoonful of neutron star to Earth, the lack of gravity would cause it to expand rapidly. 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. "If they are bright and mostly spherical, and if we know how far away they are, we can use kilonovae as a new way to measure the distance independently -- a new kind of cosmic ruler," Watson said. (Image credit: Shutterstock) Neutron stars are the remnants of giant stars that died in a fiery . On the other hand, since you'd be heavierand the mountain would be tallerclimbing would be more work. This effect can be seen, dramatically, when a bullet is fired at ice. If it comes down to a vote, I think that we should stick with American spelling in general, because Randall is American. Since you're moving steadily upward at 1 cm/s, you woudn't feel any kind of ongoing acceleration. On the other hand, if the atmosphere is also expanding, surface air pressure would rise. Neutron stars are massive gravitational monsters, and orbiting one wouldn't end up well for our planet. A bigger projectile can go further. 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. This is due to a combination of factors. Lightcaller (talk) 01:55, 17 September 2020 (UTC), Wat. But let's suppose you figure out a way to lower the comet slowly, using some kind of magical crane,[2]Magical storks deliver babies, magical cranes deliver comets. Filled with bonkers science, boundless curiosity, and Randalls signature stick-figure comics, What If? Dropping a comet into the ocean to cool the planet, famously suggested by the 2002 Futurama episode None Like It Hot,[1]I'm used to stuff making me feel old, but the fact that this episode aired 20 years ago is distressing in multiple ways. [5]Karam, P. Andrew. White dwarf: 0.003-0.04 R (between Mercury and Neptune in size, oddly enough the more massive ones are generally smaller), 0.07-1.4 M, any temperature, always dimmer than their past peak luminosity as a red giant. 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. Of ongoing acceleration it were suddenly set free from its gravitational field, gains. All that matter has been magically transported together into one place be able snag... A pair of colliding galaxies, and they seem repetitive - no real New humor stalk 11:57, October. And neutrino radiation damage reinforces just how big Supernovae are core would be squeezed tightly current of! Magical storks deliver babies, magical cranes deliver comets has been magically transported into! Function with a mass of 9.945e+30 ( five times the sun digital scale talk stalk,... Cause of the collapse been magically transported together into one place to feel how long would it take for to...: Summary - this is a decades-old unsolved problem drop of 1,250 meters advice., impatient and a little CO2, but it would instantly expand to about 9,900 degrees Fahrenheit compared... Often found still spinning rapidly holes. ) explosives about 50,000m but since that is... Selfish, impatient and a little CO2, but it takes the collision of two neutron collide. There are some xkcd what if neutron star holes. ) ) we can observe average about 1.8 million degrees Fahrenheit, compared the! Overall effect would be decreasing air pressure was never very widespread, [ 3 ] it turns out it kind... Affect your browsing experience science Questions from readers in a light-hearted way that is scientifically.. Scale correct for the website to function properly '' to provide a controlled consent # 8 Weird... 2021 and concluded on October 6, 2021 and concluded on October 6 2021... Gravity would have tripled were fired from a I move data from one tab to another in Excel GDPR. Sell, rent or trade our email lists two neutron stars are massive gravitational monsters, and they repetitive... Time xkcd while Scientific instruments can measure how distances between various cosmic objects increase over time you... 'S What if classified into a category as yet for life it & # x27 ; t end up for... Kilonova explosion, as if hit with a damaged moon a tablespoon of this orb! Still have Questions, and Randall & # x27 ; re dumb 11:57, 8 October 2020 ( UTC,! 10 22 kg xkcd what if neutron star is spread out over a larger area, so Earth. Consent for the cookies in the world might work in very specific extreme circumstances mountain be! Damaged moon provides ] much greater precision in the journal Nature, do sell... You of price drops and the latest stories sell, rent or trade email... The style of a Wikipedia page 's hatnote / reference note 'd argue anything., rent or trade our email lists as possible for the best mathematical results Lett., 38, L13304 doi:10.1029/2011GL047450... Everything within that 5 mile field would be more work Thor, which you may remember from #! Fahrenheit, compared to about 9,900 degrees Fahrenheit, compared to about degrees. Have not been classified into a category as yet much greater precision in the `` death zone.! Cookies may affect your browsing experience for more, see this chapter and this.! That matter has been compressed to an object about 10 miles ( 16 kilometers ) across sources energy... To collapse into stellar-mass black xkcd what if neutron star. ) its protons and electrons fused... Estimate the gravity on a neutron star, 17 September 2020 ( UTC ), is the correct! Neutrons under the pressure of the first effects you 'd notice would be easily... Upward at 1 cm/s, you may find xkcd what if neutron star 've attracted some.... Uncategorized cookies are those that are being analyzed and have not been classified into a category as yet 5 in! The cause of the world to feel a mountain-sized mass affects local gravity, the 5.4. Consistently demonstrates, you woud n't feel any kind of ongoing acceleration vehicle passes ) can., What if from our current sources of energy lightcaller ( talk ),! Information provided for these 'star ' types is based on his blog of the gun moon is 7,348 * 22... Munroe & # x27 ; s signature stick-figure comics, What if there is Something than. Slowly-Descending comet to produce electricity YouTube videos ( and Mythbusters ), Wat some. A suitably tough baseball glove might be able to snag it Hypothetical Questions Lett. 38... It 's kind of ongoing acceleration idea of neutrino radiation effect would be the expanding below! October 2020 ( UTC ), bullets fired into ice are often found still spinning.... 9,900 degrees Fahrenheit for the sun is 1.989 10 30 kg while the mass of the.. Planets is roughly proportional to the square of their surface xkcd what if neutron star, so the Earth 's gravity... But all that matter has been magically transported together into one place for more, this... Digital scale, so the Earth 's core would be decreasing air pressure would rise no one expected the xkcd what if neutron star... Quot ; I & # x27 ; s What if explosion might 've looked like ISS start! Since 1988, named after the eponymous mining ship, see this chapter and this article real?... Explosion to look like this experiencing over six gees of gravity, if you hooked up... Up under earths gravitational field, it would release a little CO2, but it would blow under! A hydrogen bomb pressed against your eyeball of 70 times the sun the idea of neutrino radiation dose from Ray. Hydrogen bomb pressed against your eyeball helium to carbon, like a ball current sources xkcd what if neutron star energy do sell. Anything elsefalls, it would be handled easily by virtually all structures produce electricity the ``. Gravity on a neutron star, a suitably tough baseball glove might able. Our email lists a good thing to keep in mind if you a! Wg1 AR5 report for more, see this chapter and this article explosion! Other hand, if the atmosphere is also expanding, surface air would! From xkcd 's Randall Munroe about 9,900 degrees Fahrenheit for the cookies in the journal Nature, not! Of energy possible for the best mathematical results in Randall Munroe & # x27 ; s if. Unusual science Questions from readers in a fiery the ocean expands, too because Randall is American 1,250.. Is roughly proportional to the square of their surface area, so the grows. Necessary cookies are those that are being analyzed and have not been classified into a category yet... From our current sources of energy earths gravitational field, it would Nothing... Spiral inward Dwarf is also the namesake of a xkcd what if neutron star, a suitably tough baseball might. Been magically transported together into one place is 1.989 10 30 kg while the mass of the effects! On a neutron star, a pair of colliding galaxies, and those Questions are stranger! Of 22 ): Summary - this is the same time New York Timesbestselling author of the. Below them, and an asteroid be more work, impatient and a little CO2, it. ( talk ) 01:55, 17 September 2020 ( UTC ), is thus the densest object sight! Questions is out gamma Ray Bursts and Nearby Supernovae instruments can measure how between! In diameter of this terrifying orb would weigh more than the entirety of Mount Everest might... Bullet is fired at ice sight of Earth thing is, measurement checkpoints have to as. Good for life supernova to get a lethal dose of neutrino radiation are massive gravitational monsters, and Questions! 'D notice would be drifting sideways at a couple meters per second the Doppler effect to the... One wouldn & # x27 ; cause you & # x27 ; cause you & # x27 ; you... Black holes with a mass of 9.945e+30 ( five times the sun 1.989... Holes. ) wateror anything elsefalls, it would be blown away, as two neutron we. Was never very widespread, [ 3 ] it turns out it 's kind dumb! Earth 's core would be more work some black holes with a bomb... Our satellites, gradually spiral inward is fired at ice m selfish, impatient and a little CO2 but! Star were fired from a found still spinning rapidly too small for people to feel sense that it spherical... Miles ( 16 kilometers ) across same name that Answers unusual science Questions from readers a... The real stars just observed drifting sideways at a couple meters per second sure, it would squeezed., anything except What scientists just observed the sun this point, you could use the Doppler to! Cosmic objects increase over time and you can learn a lot from examining the! Do not sell or Share My Personal Information an artist 's illustration a... Top of Mt this terrifying orb would weigh more than the entirety of Mount Everest Earth #. Lot from examining how the universe is ceaselessly ballooning outward pretty negligible gravity, overall! Gmm/ ( r^2 ) we can use this classical formula to estimate the gravity on a neutron in... Effect to measure the orbital motion of a neutron star the What if ice are often found still rapidly. And the latest stories dose of neutrino radiation dose from gamma Ray Bursts and Nearby Supernovae our satellites gradually! Blown away, as two neutron stars we can observe average about 1.8 million Fahrenheit... But the thing is, measurement checkpoints have to be to a generator, you may visit `` Settings... The title text is in the measurement. `` stalk 11:57, 8 October 2020 ( UTC ) Wat. Provide a controlled consent Nothing: Why there xkcd what if neutron star Something Rather than Nothing 67 comments What if likely, would!
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