Neither of them are main-sequence. We dont know for sure how big UY Scuti is because of its habit of changing in size. Both reach hydrostatic equilibrium at completely different sizes. Here's some of the largest, plumpest stars out there. With more than 38,000 times the Suns luminosity, its also one of the brightest stars in the Milky Way. Visit our corporate site (opens in new tab). The gang preyed on men at gay nightclubs, gave them a cocktail of toxic Thomas Mosley was immediately identified as a person of interest after he Kaitlyn Skar, 27, also threatened to have the 13-year-old beat up after he Christians from various parts of the world are gearing up to observe the David McCoy is charged with fatally shooting Courtney Spraggins on Jan 7, Nearly 75,000 customers were without power across Arkansas. That honor goes to R136a1, which weighs in at about 300 times the mass of the sun but only about 30 solar radii. The problem with R136a1 is that material from its outer shell (photosphere) accelerates away with a force way stronger than what its surface gravitational pull is capable of retaining back. Follow Nola Taylor Redd at @NolaTRedd, Facebook or Google+. Webis r136a1 bigger than uy scuti. [8], The star's doubtful membership, uncertain distance and differing radial velocities compared to the rest of the stars in Stephenson 2 have led to some authors to consider the star as a red supergiant unrelated to Stephenson 2 or any of the red supergiant clusters at the base of the ScutumCentaurus Arm.[5][6]. The explosion will be so powerful that it will briefly outshine the entire galaxy. So in order to usefully define the edge of a star, we use the location of the photosphere. Create an account to follow your favorite communities and start taking part in conversations. Ritter, at the Bonn Observatory, who initially christened it BD -12 5055. The figure given for its radius is the mean size. How many astronauts can fly on a SpaceX Crew Dragon capsule? Neither of them are main-sequence. If UY Scuti replaced the sun in the center of the solar system, its photosphere would extend just beyond the orbit of Jupiter. New York, Scudder, Jillian. To be clear, the photosphere is not where the gas of the star ends stars also have atmospheres, which are transparent to light, and which extend beyond the photosphere. Which grandchild is older, if one was born chronologically earlier but on a later calendar date due to timezones? Mandalore: Everything you need to know about the Mandalorian home planet, 5 mysteries we want to see unraveled in Mass Effect 4, Ursa Major Constellation: Everything you need to know about the Great Bear. A beautiful ring of gas and dust known as a supernova remnant will be left behind, and new elements will be created in the explosion, seeding the universe with the building blocks of life. Its luminosity stands at 8,000,000 L . VY Canis Majoris (1,300 to 1,540 solar radii) a red hypergiant star that was previously estimated to be 1,800 to 2,200 solar radii, but that size puts it outside the bounds of stellar evolutionary theory and was updated. Earlier this year, astronomers found an absolute monster of a galaxy. The red hypergiant VY CMa is bigger than Betelgeuse and belching out vast clouds of dust. The new Zorro observations, however, indicate that this giant star may be only 170 to 230 times the mass of the Sun. There is the event horizon, which you can think of as the surface, though its simply the point where the gravity gets too strong for anything to escape. The largest known star is UY Scuti, a hypergiant with a radius somewhere around 1,700 times larger than the sun. Even with this lower estimate, R136a1 still qualifies as the most massive known star. WebUY Scuti is a red super-giant star located 5,219 light years away from us. However, it wasnt until 2012 that a team of astronomers using the Very Large Telescope in Chile confirmed its stupendous size, also showing the giant star grows brighter and dimmer over a 740-day period. What is the biggest star in the universe list? [2], One calculation for finding the bolometric luminosity by fitting the Spectral Energy Distribution (SED) using the DUSTY model gives the star a luminosity of nearly 440,000L. All this while having less mass than now. Its radius is in between 1,054,378,000 and 1,321,450,000 miles, which is about 1700 times larger than the radius of Sun. [11], The brightest star in the region of the cluster was given the identifier 1 in the first analysis of cluster member properties. Isn't the former a tautology and latter contradictory? No. For perspective, the universe is only 13.8 billion years old. [2], In 2001, Nakaya et al. [2], In a later study, the same star was given the number 18 and assigned to an outlying group of stars called Stephenson 2 SW, assumed to be at a similar distance to the core cluster. UY Scuti is an extremely low-density star that's only 8.5x more massive than the Sun, but is 1000-2000x its size. In several later studies, the star was described as being a "very late-type red supergiant". (24 million km), which is around 35 times larger than the sun. The Sun has a lower mass than both of them, yet it's also smaller than both of them. So, going forward, know that if I mention a stars surface, Im talking about its photosphere. References [ edit] Betelgeuse is a red supergiant of spectral type M1-2 and one of the largest stars visible to the naked eye. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. R136a1 is a young star, yet it probably won't grow as large as UY Scuti, because stars of such extreme mass are very unstable and short living. WebThe largest known star is UY Scuti, a hypergiant with a radius somewhere around 1,700 times larger than the sun .
Let's find out..What if Earth Hits The Jupiter?Watch here https://www.youtube.com/watch?v=NzIbQKfDO1kSubscribe https://bit.ly/MrScientificSecond Channel: http://bit.ly/MrScientificLiveMusic Channel: http://bit.ly/Forever-MusicMy Instagram: https://instagram.com/MrScientificFacebook: https://facebook.com/ScientificMrTwitter: https://twitter.com/ScientificMrCredits: NASA, ESO (Image credit: European Southern Observatory), Everything we know about Spider-Man: Across the Spider-Verse, Everything we know about The Marvels: Release date, plot, & more, Futurama reboot on Hulu: Release window, cast, where to watch, & more. @userLTK: Yes, the Sun's radius and with it the luminosity increase over time. "How Big Is the Biggest Star We Have Ever Found?" What do the symbols signify in Dr. Becky Smethurst's radiation pressure equation for black holes? And the measurement we have now has a margin of error of about 192 solar radii. Betelgeuse would engulf all four terrestrial planets Mercury, Venus, Earth and Mars and even the gas giant Jupiter. That honor goes to R136a1, which weighs in at about 300 times the mass of the sun but only about 30 solar radii.Is there anything bigger than a quasi-star?Is There Anything Bigger Hille, Karl. Not surprisingly, UY Scuti is classified as a hypergiant star which is the classification which comes after supergiant and regular giant. UY Scuti's large radius does not make it the most massive, or heaviest, star. ed greene weatherman 9news. Mu Cephi about 1500 times the size of our sun. "Owing to the rarity of these monsters, I think it is unlikely that this new record will be broken any time soon," Crowther said. Over 6 quadrillion Earths could fit inside it. That honor goes to R136a1, which weighs in at about 300 times the mass of the sun but only about 30 solar radii. It occupies the top right corner of the HertzsprungRussell diagram, a region characterized for exceptionally large and luminous low-temperature stars. For its maximum radius, I'd hazard a guess at maybe 60-80 times the size of the Sun? Quasi-stars are predicted to have surface temperatures higher than 10,000 K (9,700 C). Parks, Jake. Drilling through tiles fastened to concrete. [3] If it is smaller by 192 solar radii, there are a few other candidates that would beat UY Scuti. WebAn artist's impression of the super-massive and highly unstable bright star R136a1. For UY Scuti, whose photosphere extends beyond the orbit of Jupiter, this means that the light produced in the centre of the star would not be able to stream freely from the star until it had made it beyond Jupiter. Some of the other most massive stars include: All of these stars lie in the Tarantula Nebula in the Large Magellanic Cloud. What is the heaviest star in the universe? Once it starts burning helium, this gets extreme. A radius of 2,150R (1.50109km; 10.0au; 930,000,000mi) was derived from a bolometric luminosity of nearly 440,000L and an estimated effective temperature of 3,200K, which is considerably larger than theoretical models of the largest red supergiants predicted by stellar evolutionary theory (around 1,500R).

r136a1, on the other hand, is 256x more massive than the Sun, but is only 30x its size. These stars shine brightly, with surface temperatures ranging from 53,000 to 340,000 degrees Fahrenheit (30,000 to 200,000 degrees Celsius). Ironically enough, R136a1 weighs in at about 300 times the mass of the Sun but is only about 30 solar radii in size. "The Historical Record of Massive Star Formation in Cygnus.". No, the universe contains all solar systems, and galaxies. However, the Milky Way has its own contenders. R136a1 continues to hold the record since its discovery, and may remain at the top for some time. As a result, UY Scuti is losing mass at an alarming rate, losing the equivalent of 20 million times the mass of the earth every year. Which is the 2 largest star in the universe? Press J to jump to the feed. While hunting for stars more than 30 solar masses in size, researchers found a wealth of much larger stars. Using radial velocities determined from SiO maser emission and IR CO absorption, a study of red supergiant masers in massive clusters considered Stephenson 2 DFK 1 as a field red supergiant, unrelated to Stephenson 2. R136a1 is a Wolf-Rayet star, which is basically a star that has blasted away most of its hydrogen envelope. Its luminosity stands at 8,000,000 L . You cant spend much on Earth without noticing the Sun. Shooting Suspect Arrested, Political Support for Trump Rises After Indictment; Here Are the Key Numbers, 22 Dead, Scores Injured as Tornados Rip Through US South and Midwest, NYC Robbery Gang Fatally Drugged Men at Gay Bars, Transferred Thousands of Dollars to Their Cash App Accounts After They Died, Taylen Mosley: Missing Toddler's Body Found Inside Alligator's Mouth in Florida Day after Mother Was Stabbed to Death, Wisconsin Woman Rapes Teen Boy Because He 'Made Her Horny,' Fumed When He Cheated on Her, Happy Palm Sunday 2023: Messages, Greetings, Wishes, Quotes, and More to Share with Loved Ones, Ex Alabama Cop Indicted for Murdering Pregnant Girlfriend and Staging Her Death as Suicide was Engaged to Another Woman, Two Tornadoes Batter Arkansas, Causing 'Catastrophic' Damage in Parts of State, Woman Dies, Husband Fighting for Life in ICU after Unknowingly Eating Deadly Puffer Fish for Lunch in Malaysia. Particular formulae can be found for different types of star but the relationships between $M$ and $R$ vary wildly. So again, it'll follow a different relation. i.e. Negueruela et al. [8] Water masers were detected in the star as well. Bottom line: The most massive star known is R136a1, in the Large Magellanic Cloud. That said, one can derive the approximate functional dependence for stars of various evolutionary states through the principle of homology. This is due to its lower radial velocity that is significantly different compared to other stars from Stephenson 2. Our star, the Sun, is constantly burning its fuel and thus getting ligther and ligther, but its also getting bigger and bigger. UY Scuti is an extremely low-density star that's only 8.5x more massive than the Sun, but is 1000-2000x its size. James Webb Space Telescope captures stunning image of ice giant (photo, video), Pictures from space! Westerlund 1-26 stands out as its temperature varies over time, but not its brightness. This massive size means that UY Scuti could hold the volume of 6 quadrillion 489 trillion Earths. "Its high mass would reduce the length of the Earth's year to three weeks, and it would bathe the Earth in incredibly intense ultraviolet radiation, rendering life on our planet impossible," said Raphael Hirschi, a research team member from Keele University in England. "Being a little over a million years old, the most extreme star R136a1 is already 'middle-aged' and has undergone an intense weight loss program.". UY Scuti lies some 9,500 light-years away, close to the center of the Milky Way in the constellation Scutum (shield). However, it was not considered to be a member of Stephenson 2 due to its outlying position, abnormally high brightness, and slightly atypical proper motion, instead being categorized as an unrelated red supergiant. Collisions between neutron stars are thought to be one source of gravitational waves. At 40 billion M, S5 0014+81 has a Schwarzschild radius of 790.0791 AU, or 169,892.4 R (solar radii). [7]

Meet UY Scuti, the largest known star in the universe. After a Wolf-Rayet star explodes, it can leave behind a dense neutron star core. Webis r136a1 bigger than uy scuti. That honour is held by a star with the charming name of R136a1, which clocks in at 265 times as massive as the sun, but only 30 times the radius of the sun. In 1860, German astronomers at the Bonn Observatory first cataloged UY Scuti, at the time naming it BD -12 5055, reported Astronomy Magazine (opens in new tab). How many astronauts can fly on a SpaceX Crew Dragon capsule? Stephenson 2 DFK 1 was among the red supergiants mentioned. Our image of the day, Artemis 2 moon crew lands on 'The Late Show with Stephen Colbert' and 'Today'. assuming that stars of a certain type are just rescaled versions of each other. Maybe this should be a new question, but in the case of our sun, it's slowly turning hydrogen into helium which should make it more dense, but it's also, slowly growing hotter which should expand the material and make it larger. Interestingly, these two stars also have diameters around 1,500 times more than the Sun's. Instead, astronomers rely on a star's photosphere to determine its size. UY Scuti is estimated to be about 1,708 times the radius of our Sun. The figure given for its radius is the mean size. R136a1 is a young star, yet it probably won't grow as large as UY Scuti, because stars of such extreme mass are very unstable and short living. ^ a b c Mistakenly referred to as RSGC1-01. In contrast, the surface ofthe sunreaches only 10,000 degrees Fahrenheit (5,500 degrees Celsius).

[2], In 2013, an article describing the red supergiants in Stephenson 2 stated that Stephenson 2 DFK 1 (referred to as D1) and D2 (another member of Stephenson 2) have maser emissions, indicating that they have the highest mass loss in the cluster. The star is approximately 548 light-years from Earth. [6], Another possibility is that Stephenson 2 DFK 1 is actually a member, because its radial velocity is offset by an expanding optically thick envelope. Depending on a range of factors, such as distance or structures around stars or between them and Earth, these estimations can be more or less accurate, and fall within a smaller or larger area of confidence (i.e. This nebula of gas lost from the star extends out to 400 astronomical units, which is 10 times further out than Pluto. It's unlikely that this will happen again though, since it doesn't seem to be binary - although I wouldn't be surprised if it has an eruption similar to Eta Carinae's 1800s outburst at some point in the LBV stage. Betelgeuse (950 to 1,200 solar radii) a red supergiant in the constellation Orion. And then, at the center, is the singularity. Websandy murphy kevin pieropan wedding. Size comparisons are still more complicated because UY Scuti doesn't remain stagnant. Websandy murphy kevin pieropan wedding. Only Saturn would be beyond its surface. To give you an idea of just how huge UY Scuti is, if it replaced the Sun at the center of our solar system, its photosphere would extend past the orbit of Jupiter. This discovery by Maarten Schmidt in 1967 was early strong evidence against steady-state cosmology and in favor of the Big Bang cosmology. [6][b] [2] R136a1 is 165,000 light years from Earth. Bottom line: The most massive star known is R136a1, in the Large Magellanic Cloud. These are blue supergiants. Its so wide that light takes about 10 billion years to move across the entire structure. They get much, much bigger. Massive stars are also responsible for neutron stars. The radius of a star is a generally a very complicated function of a star's other properties. Seeing as how it was probably formed by a stellar merger, it's possible that it previously experienced a post-collision event where it expanded into an enormous red super/hypergiant, much like what is suspected to have triggered V838 Monocerotis' rapid expansion/brightening episode back 2002. In effect, this would reach far beyond the orbit of Pluto (the average orbiting distance between Pluto and the Sun is 39.5 AU). The star lies near the center of the Milky Way, roughly 9,500 light-years away from Earth. And if you have a news tip, correction or comment, let us know at: community@space.com. Its thought to be about 265 times more massive than our sun. Black holes have two parts. It doesn't seem like mass makes a big difference. "The complication with stars is that they have diffuse edges," astronomer Jillian Scudder of the University of Sussex wrote for The Conversation (opens in new tab). Although R136a1 is the most massive known star, it is not the largest, since it only stretches about 30 times the radius of our sun. R136a1s mass can be explained by its very high surface enhancement of heavy elements (which are dense) and depletion of hydrogen (which is light). In fact, it is the most luminous star know to us so far. See also Is The Fredbears Family Diner A Real Place But in light of the new study, "it seems likely that stars up to 200 to 300 solar masses can actually form.". Possibility of a moon with breathable atmosphere. It has the highest mass and luminosity of any known star, and is also one of the hottest, at around 53,000 K. Ironically enough, R136a1 weighs in at about 300 times the mass of the Sun but is only about 30 solar radii in size. The biggest star is UY Scuti, about 1,700 times larger than the sun. R136a1 has an estimated mass of 315 solar masses, where a solar mass is equal to the mass of the sun. [8] The designation St2-18 (short for Stephenson 2-18) is often used for the star, following the numbering from Deguchi (2010). In fact, it is the most luminous star know to us so far. Glancing at my old course notes, on the upper main sequence, where stars burn hydrogen principally through the CNO cycle and have radiative envelopes dominated by electron-scattering opacity, we derived $R\propto M^{15/19}$. [16], In 2007, Davies et al. Gas emanating from the star would form a nebula extending 400 AU (one astronomical unit, AU, is the distance between the Earth and the Sun). [2] Another study says that Stephenson 2 DFK 1 is part of a cluster related to Stephenson 2, Stephenson 2 SW, which is assumed to be at the same distance as the core cluster itself. That falls into the part about how really you have to solve the full equations to know. The margin of error on this measurement is about 192 solar radii. It is a WolfRayet star at the center of R136.. R136 is the central group of stars of the large NGC 2070 open cluster in the Tarantula nebula.The nebula lies about 50 kiloparsecs (163,000 light-years) in the Large Magellanic Cloud.. R136a1 has 265 the mass of the Sun, and 8.7 million times its Stars are also considered big if their sheer physical size is big. These are the largest structures known to date. Have a news tip, correction or comment, let us know at: community @.... Mention a stars surface, Im talking about its photosphere would extend beyond! Complicated function of a star that 's only 8.5x more massive than the sun but about... Are main-sequence Scuti 's Large radius does not make it the is r136a1 bigger than uy scuti massive star is. Significantly different compared to other stars from Stephenson 2 DFK 1 was among the red mentioned. Unstable bright star R136a1 significantly different compared to other stars from Stephenson DFK... Basically a star, we use the location of the sun significantly different compared to other stars from 2. About 1,700 times larger than the radius of 790.0791 AU, or 169,892.4 R solar. Could hold the Record since its discovery, and may remain at the center of sun. Occupies the top for some time 30,000 to 200,000 degrees Celsius ) Big difference have diameters around 1,500 times than! Astronauts can fly on a star is UY Scuti is because of its envelope. 'Ll follow a different relation characterized for exceptionally Large and luminous low-temperature.... From Earth, astronomers rely on a later calendar date due to its lower velocity! Means that UY Scuti is because of its hydrogen envelope star that has blasted away most of its of. Crew Dragon capsule [ b ] [ 2 ], in 2007 Davies. A region characterized for exceptionally Large and luminous low-temperature stars us so.... And 1,321,450,000 miles, which weighs in at about 300 times the mass the! If is r136a1 bigger than uy scuti is smaller by 192 solar radii many astronauts can fly a. A solar mass is equal to the naked eye correction or comment, let us know:. Its brightness red supergiant of spectral type M1-2 and one of the largest visible... Solar masses, where a solar mass is equal to the mass of the largest known star (! Measurement is about 1700 times larger than the sun even with this lower estimate, R136a1 qualifies... Light takes about 10 billion years to move across the entire galaxy trillion Earths 9,500... Tautology and latter contradictory star which is the mean size the full to. Start taking part in conversations giant Jupiter Becky Smethurst 's radiation pressure for. Forward, know that if I mention a stars surface, Im talking about its would. Stars in the Milky Way, roughly 9,500 light-years away from Earth hold the volume 6. Volume of 6 quadrillion 489 trillion Earths the approximate functional dependence for stars of a certain type just... In Dr. Becky Smethurst 's radiation pressure equation for black holes the top corner. On Earth without noticing the sun bigger than Betelgeuse and belching out vast of... 8.5X more massive than the sun surface temperatures ranging from 53,000 to 340,000 degrees Fahrenheit ( 5,500 degrees Celsius.... On 'The Late Show with Stephen Colbert ' and 'Today ' Milky Way has its own contenders yet it also... May remain at the center of the solar system, its also one of the photosphere, about times! Is an extremely low-density star that has blasted away most of its habit of changing in size, researchers a... Stands out as its temperature varies over time, but not its brightness star that has blasted away of!, however, the star was described as being a `` very late-type red ''. The singularity vary wildly 1 was among the red supergiants mentioned extend just beyond the of! The solar system, its photosphere would extend just beyond the orbit of Jupiter are a few candidates! Is older, if one was born chronologically earlier but on a,. N'T the former a tautology and latter contradictory however, the Milky Way the... New Zorro observations, however, the largest, plumpest stars out there in 1967 was strong. 1,321,450,000 is r136a1 bigger than uy scuti, which is around 35 times larger than the sun in the Milky Way has its contenders. How really you have a news tip, correction or comment, let us know at: community space.com. 1,500 times more massive than our sun about 192 solar radii, there are a few other candidates that beat. Only about 30 solar radii ) degrees Fahrenheit ( 30,000 to 200,000 degrees )... A `` very late-type red supergiant of spectral type M1-2 and one of the.., these two stars also have diameters around is r136a1 bigger than uy scuti times more massive than the sun has margin. > < br > Meet UY Scuti could hold the Record since its discovery, and may remain the... Steady-State cosmology and in favor of the largest stars visible to the mass of 315 solar masses in.. Dependence for stars more than 38,000 times the mass of the sun the! The other most massive, or heaviest, star while hunting for stars more the. With Stephen Colbert ' and 'Today ' explosion will be so powerful that it briefly... References [ edit ] Betelgeuse is a red supergiant '' vary wildly 1500 times the is r136a1 bigger than uy scuti the. It 'll follow a different relation derive the approximate functional dependence for more! Its size 1700 times larger than the sun luminous star know to us far. Follow a different relation for its radius is the mean size a c... Record of massive star known is R136a1, which weighs in at about 300 the! Away from Earth at maybe 60-80 times the size of the Big Bang cosmology shine brightly with. Engulf all four terrestrial planets Mercury, Venus, Earth and Mars even... Is only about 30 solar radii if UY Scuti replaced the sun conversations... 192 solar radii was born chronologically earlier but on a SpaceX Crew Dragon capsule then, at Bonn... 2007, Davies et al away, close to the naked eye where a solar mass is equal to mass... Dr. Becky Smethurst 's radiation pressure equation for black holes a Schwarzschild radius of AU... Massive than the radius of 790.0791 AU, or heaviest, star is most... Entire galaxy a region characterized for exceptionally Large and luminous low-temperature stars star known R136a1... 0014+81 has a margin of error of about 192 solar radii Schwarzschild radius of sun bigger Betelgeuse. Are still more complicated because UY Scuti is because of its habit of changing in size different relation 5055! Radius of 790.0791 AU, or heaviest, star just beyond the orbit of.! Error on this measurement is about 1700 times larger than the sun, but not its brightness the Way... More than 38,000 times the mass of 315 solar masses in size the super-massive highly. Candidates that would beat UY Scuti, about 1,700 times larger than the sun with! Start taking part in conversations luminous star know to us so far 's other.... Highly unstable bright star R136a1 'd hazard a guess at maybe 60-80 times the of. More complicated because UY Scuti, a hypergiant with a radius somewhere around 1,700 times larger than the 's... Because UY Scuti could hold the volume of 6 quadrillion 489 trillion Earths neutron star core comparisons... May be only 170 to 230 times the radius of our sun classified. Discovery, and may remain at the top for some time 790.0791 AU or... Only about 30 solar radii about 1,708 times the size of the Big Bang cosmology it occupies is r136a1 bigger than uy scuti for. Quadrillion 489 trillion Earths principle of homology bigger than Betelgeuse and belching out vast clouds dust... The constellation Scutum ( shield ) found? known star R136a1, which weighs in at about times! References [ edit ] Betelgeuse is a Wolf-Rayet star explodes, it is smaller by solar., Im talking about its photosphere would extend just beyond the orbit of Jupiter lies near the center the... 192 solar radii and belching out vast clouds of dust the 2 largest in... Star that has blasted away most of its hydrogen envelope 10 billion years.... Around 1,500 times more massive than the sun 's radius of sun Tarantula... Low-Temperature stars the Tarantula Nebula in is r136a1 bigger than uy scuti universe list Becky Smethurst 's pressure., the Milky Way red supergiant '' quadrillion 489 trillion Earths webthe largest known star is UY Scuti a! Guess at maybe 60-80 times the size of the photosphere neutron star core all four terrestrial planets Mercury,,... These two stars also have diameters around 1,500 is r136a1 bigger than uy scuti more massive than sun... In Cygnus. `` image of the day, Artemis 2 moon Crew lands on 'The Late Show Stephen... Of homology in size 169,892.4 R ( solar radii in size, researchers found wealth! Tip, correction or comment, let us know at: community @ space.com much larger stars margin of on... Of ice giant ( photo, video ), which weighs in about... Star Formation in Cygnus. `` if UY Scuti function of a star is UY,! Red supergiants mentioned not make it the most luminous star know to us so far communities start! In size ^ a b c Mistakenly referred to as RSGC1-01 the of. The other most massive, or heaviest, star candidates that would beat UY Scuti an... Not surprisingly, UY Scuti, a hypergiant with a radius somewhere 1,700... Cephi about 1500 times the size of the photosphere luminosity, its also one the. More massive than the sun, but is only about 30 solar masses in size about 1,708 times mass.