Big . NY 10036. 5 How bright will Betelgeuse be when it goes supernova? When that light does arrive, the intensity of the supernova, as seen here on Earth, is somewhat a debate. Elizabeth is also a post-secondary instructor in communications and science since 2015. This process will eventually culminate in a type 1a supernova blast. If the explosion remains are more than 3 solar masses in the central region, a black hole formation is possible. RS Ophiuchi is relatively close and prime to go supernova. They were later also associated with Hercules (Pollux) and Apollo (Castor). Pollux is very easy to find because it is one of the brightest stars in the night sky and because it is one of the stars that form the Winter Hexagon, a large asterism that dominates the evening sky during the northern hemisphere winter. Pollux b was given the proper name Thestias, after Leda, the mother of Castor and Polydeuces in Greek mythology. New York, Pollux is believed to have started its life as a main sequence star of the spectral type A, but eventually spent its supply of hydrogen and evolved into an orange giant. See our. A supernova is the name given to the cataclysmic explosion of a massive star at the end of its life. This courseware module is offered as part of the Repository of Open and Affordable Materials at Penn State.. Scientists suspected its presence since 1993, when a team at University of Texas at Austin measured precise relative radial velocities for three class K giant stars: Pollux, Arcturus and Aldebaran. Constellation Lupus brightest star, Alpha Lupi, may be the next star to go supernova. He also turned the brothers into the constellation Gemini. Those without Balmer lines are classified as Type I SNe and those with Balmer lines are classified as Type II. What happens next in the life of a star depends on its initial mass. It eventually exhausted its supply of hydrogen and evolved into an orange giant. The Chinese named Pollux the Third Star of North River which is an asterism formed by Pollux, Castor and Rho Geminorum. A) Pollux B) Barnard's Star C) Sun D) Deneb. Even though they are referred to as twins and appear similar in brightness, the two stars are very different. Rigel has around 21 solar masses. Many cultures associate Pollux and Castor as twins. Which star is most likely to become a supernova? Even though this is only a tenth of the Suns age, the stars in the Capella system are nearing the end of their life cycle because they are significantly more massive than the Sun and they burn their supply of fuel more quickly. Both are characterized by a tremendous, rapid brightening . With an eccentricity of 0.02, the planets orbit is almost circular. Ploutos and Philomelos Sons of Demeter and the demigod Iasion. The 17th century Egyptian astronomer Al Achsasi al Mouakket listed the star as Muekher al Dzira in his Calendarium. 1.14), Castor A (Alpha Gem A, mag. Pollux and Castor were twins who were supposed to assist sailors in trouble. Pollux and Castor were twins and they were called Dioscuri in Greek, and the Gemini in Latin. The stars estimated age is 724 million years. Mira is cooler and redder but intrinsically brighter than the Sun. In 2010, the Italian Center for Aerospace Research (CIRA) had a prototype space plane that it called Pollux. Interview: Michel Bauwens on Peer-To-Peer Economics and Its Role in Reshaping Our World, Stunning Images Chart Shapeshifting Nature of Venus' Polar Vortex, Astronomy Photo of the Day: 11/10/15 CARMA-7, No, Science Does Not Say That Religious Children Are More Likely to be 'Immoral", Scientists Take a Closer Look, Find No Evidence of Alien Megastructures, Physicists Find Particles That Switch Between Matter and Antimatter, Newfound Radio Galaxy is the Largest Known, And It's Dying, New Visualization Shows Incredible Variety of Extraterrestrial Worlds. Sirius A (Alpha Canis Majoris) Our number one star on the list. It will keep getting bigger until it reaches the end of its life cycle. This weak magnetic field points out the fact that Pollux might have been an Ap star with a much stronger magnetic field. 1 See answer Plus, its in its late evolutionary stages. Pollux is an intermediate mass star, almost twice as massive as the Sun and almost nine times larger. The period of revolution of Ceres around the Sun is approximately A) A and B B) B and C 27. One of the most notable stars in Orion, and the ninth brightest in the ski, is Betelgeuse. It is an orange-hued evolved giant star, and also the closest giant star to the sun at a distance of only 34 light-years. Which process produces the largest amount of energy given off by stars? Mira is hotter and bluer but intrinsically fainter than the Sun. Pollux is a red giant star that has exhausted its supply of hydrogen, and is now fusing helium into carbon and other elements. While scientists are confident a supernova will occur in 2022, whether it occurs in our galaxy is a different matter. The cookie is used to store the user consent for the cookies in the category "Analytics". It could kill just about every multi-cellular organism that lives on land. supernova, plural supernovae or supernovas, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. The plane was planned to execute test maneuvers that year and to get to a top re-entry speed of Mach 1.2. Do Men Still Wear Button Holes At Weddings? . Observational efforts have been mostly directed towards identifying possible observational signatures of the progenitor binary. Draw an imaginary line from Rigel through Betelgeuse to star-hop to Castor and Pollux. Pollux, which is slightly closer to us, is a single star, while Castor is a star system consisting of six stars. The exoplanet was named through public voting and suggestions. The planet is orbiting Pollux with a period of about 590days.[10]. The presence of this field suggests that Pollux was once an Ap star with a much stronger magnetic field. Mastodon: https://qoto.org/@howellspace. Which stars will go supernova? SNe are broken down into two groups based on the presence or absence of Hydrogen Balmer lines in their spectra at maximum brightness. In other words, this explosion would create an unparalleled sight in our sky. Pollux, and by extension Castor, are sometimes identified with Apollo and Hercules or even with the founders of Rome the brothers Romulus and Remus. Actually, Rigel is part of a triple or quadruple star system. "It will depend on whether what remains on the inside is an active pulsar, a very. Type II supernova progenitors include stars with at least 10 solar masses that are in the final stages of their evolution. Arrows indicate directions of movement. Pollux has an average temperature of around 4.666 Kelvins, a bit cooler than our sun. Author: Dr. Christopher Palma, Senior Lecturer in the Department of Astronomy and Astrophysics, The Pennsylvania State University. The closest star that could go supernova is most likely Spica, a short 240 light-years from Earth. They are roughly one-tenth the mass and diameter of the Sun. And as a reminder, the sun is about 8.3 light- minutes from Earth. Most often asked questions related to bitcoin. Letter N represents the North Pole. In a few billion years, the sun will become a red giant so large that it will engulf our planet. Nebula Because of its weight and luminosity it becomes a Red Super Giant. Some suggestthat it would be able to beseen during the daytime and outshine the moon at night. It indeed showed some small amplitude variations in its radial velocity, but photometrically, it wasnt variable. Most . Betelgeuse, which is located approximately 640 light-years from Earth in the constellation Orion -- is one of the biggest and brightest stars in our galactic neighborhood. If the mass of the core is between 1.4 and 3.0 times the mass of the Sun, the core will become a neutron star. Pollux is believed to have started its life as a main sequence star of the spectral type A, but eventually spent its supply of hydrogen and evolved into an orange giant. M1 is the remains of a star that went supernova in 1054, an event recorded by Chinese and Japanese astronomers. Can Pollux become a supernova? The sudden decrease in the sun's mass might free the planet to wander off into space. What is the closest star that could go supernova? Like other red giants, this process causes Pollux to become cooler than our Sun hence its orange color and much larger: 10 times the diameter of the Sun. What causes the gas and dust cloud to condense and become a star? To get the best experience possible, please download a compatible browser. A) gravity B) outgassing C) friction D) density. These stars end their evolutions in massive cosmic explosions known as supernovae. For Pollux to go supernova, it would have to be of much bigger mass. Prominent examples of stars in this mass range include Antares, Spica, [1] Gamma Velorum, [2] Mu Cephei, and . Alpha Lupi is locked and ready to go supernova. What kind of star becomes a supernova? Pollux is believed to have started its life as a main sequence star of the spectral type A, but eventually spent its supply of hydrogen and evolved into an orange giant. The name that was originally submitted for the planet by the Australian research project theSkyNet was Leda, but the IAU requested that it be substituted for the patronym Thestias because the name Leda had already been given to one of Jupiters satellites, as well as to an asteroid. 26. The exoplanet orbits Pollux . In Greek and Roman mythology, Castor and Pollux were twin brothers born to different fathers, one immortal (Zeus) and the other mortal (Tyndareus). Along with Castor, Pollux is one of the two main guideposts for the asterism, which is sometimes nicknamed "the twins.". Since 1943, the spectrum of this star has served as one of the stable anchor points by which . Only a very big star with a lot of mass can turn into a supernova. In other words, the star is in the late evolutionary stages of its life. But even if it exploded tomorrow, don't expect the explosion to be noticeable anytime soon. Polluxs abundance of elements metallicity is uncertain. Bottom line: Measuring the distance to Betelgeuse has been particularly difficult because it is a variable star. The stars Castor and Pollux are named for the mythological twins. 28. What's more, Earth wouldn't stay put in orbit. The constellation of Gemini is the northernmost of the zodiacal constellations and among the brightest. Ultimately, it seems that this star is the most likely candidate for a rapid, fiery blast (perhaps if we say it three times, we'll get to see it in our lifetimes?). As it is not massive enough to go out as a supernova, Pollux will end its life by expelling its outer layers to form a planetary nebula, leaving behind a compact white dwarf. The X-rays were produced by a jet launched from the core of the star at the moment of its collapse. The conventional wisdom about the life cycles of stars runs something like this: Smaller stars burn smoothly for billions of years. Plus, at only 240 light-years away, Spica would put on a display, possibly brighter than a full Moon. So if you want to learn all about which stars are most likely to supernova next, then you're in the right place. They found long-period variations in the relative radial velocity of all three stars (a period of 558 days for Pollux), too long to be a result of radial pulsations. Prominent examples of stars in this mass range include Antares, Spica,[1] Gamma Velorum,[2] Mu Cephei, and members of the Quintuplet Cluster. When Betelgeuse explodes as a supernova it will be more than 10 times brighter than the full moon in our sky. Marina D'Arechi. Scientists who proposed the Big Bang Theory were attempting to explain. Though the star displays small amplitude radial velocity variations, it is not photometrically variable. Most scientists believe that the star will end its life by expelling its outer layers to form a planetary nebula, leaving behind a compact white dwarf. There are two types of supernovae and each has special characteristics. The next full Moon will be on Friday, January 6, 2023, appearing opposite the Sun in Earth-based longitude at 6:08 PM EST. Whether it was a "massive" star (some 5 or more times the mass of our Sun) or whether it was a "low or medium mass" star (about 0.4 to 3.4 times the mass of our Sun), the next steps after the red giant phase are very, very different . Once an A-type main sequence star, Pollux has exhausted the hydrogen at its core and evolved into a giant star with a stellar classification of K0 III. Of course, given the vast distance, life on Earth is unlikely to be altered in any meaningful way (except that we'll likely have an absurdly bright star in our night sky). It will keep getting bigger until it reaches the end of its life cycle. [10][34], Evidence for a low level of magnetic activity came from the detection of weak X-ray emission using the ROSAT orbiting telescope. Gravity pulled the swirling gas and dust together and resulted in the brightest star in Orions constellation, Rigel. So, here are the top 10 candidates for the next star to go supernova. This is one of the weakest magnetic fields ever discovered in a star. After about a billion years the sun will become hot enough to boil our oceans. The sun is currently classified as a "main sequence" star. "It suggests that planet-formation around stars much more massive than the sun may [be] common," read an Astronomy and Astrophysics paper concerning the discovery. Polluxb is calculated to have a mass at least 2.3 times that of Jupiter. A relatively close 34 light-years away, Pollux is just under two times the mass of our sun, almost nine times the diameter of the sun, and about 30 times the suns brightness in visible light. This cookie is set by GDPR Cookie Consent plugin. electron degeneracy pressure. Visit our corporate site (opens in new tab). The existence of Pollux b was announced on June 16, 2016. ", "Probing the post-AGB nature of HD 179821", "Massive white dwarf in our galaxy may go supernova", Timeline of white dwarfs, neutron stars, and supernovae, Monte Agliale Supernovae and Asteroid Survey, https://en.wikipedia.org/w/index.php?title=List_of_supernova_candidates&oldid=1137022972, Articles with dead external links from March 2020, Articles with permanently dead external links, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 2 February 2023, at 10:42. Pollux is a giant star of spectral type K0 III. She is described as being extremely friendly and smiles at everyone. Pollux is an intermediate mass star, almost twice as massive as the Sun and almost nine times larger. The star has a temperature of 8,360 F (4,627 C). EMMY NOMINATIONS 2022: Outstanding Limited Or Anthology Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Supporting Actor In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Limited Or Anthology Series Or Movie, EMMY NOMINATIONS 2022: Outstanding Lead Actor In A Limited Or Anthology Series Or Movie. They can live up to one hundred billion years. The classification of SNe is an observational one. At a measly 460 light-years from Earth, Alpha Lupi has a mass of more than 10 Suns. How much solar power do I need to run a laptop? Pollux chose the latter and Zeus granted the brothers an alternate immortality, allowing them to spend half their time on Olympus and the other half in Hades. Will Pollux become a supernova? On the other hand, one day it. Blue stars are the hottest stars of all. As it is not massive enough to go out as a supernova, Pollux will end its life by expelling its outer layers to form a planetary nebula, leaving behind a compact white dwarf. Stars that don't go supernova or (rarely) hypernova usually collapse into black holes, but there are certain stars doomed to turn into these monsters their entire lives.. Those stars that do morph into black holes usually go through the death throes of a core-collapse supernova but some are too enormous for even that. Capella Ab is slightly smaller and hotter and of spectral class G1III; it is 72.7 3.6 times as luminous as the Sun and 8.83 0.33 times its radius. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Thestias is the patronym of Leda, a daughter of Thestius one of the kings of the Pleuronians in Aetolia. The gravity pulled together the swirling gas and dust to make the star that we see today as the brightest of the Gemini constellation. Nearly 4,000 light-years away in the constellation, Ophiuchus, RS Ophiuchi is a white dwarf nova system. It does not store any personal data. In any given year, it is an unlikely prospect. This provides astronomers with an opportunity to compare two similar stars, both exceptionally bright, located at the same distance. Pollux science. This cookie is set by GDPR Cookie Consent plugin. Pollux is a red giant, with a mass close to our sun. This is because a type II supernova blasts from a star this massive would have a peak luminosity over one billion times the energy produced by the Sun. SpaceX Crew-6 astronaut launch: Live updates, prototype space plane that it called Pollux, watching the gravitational wobbles in Pollux, planet-formation around stars much more massive than the sun may [be] common, We need more rules for space junk and moon bases, NASA and US officials say, NASA's SWOT water satellite suffers instrument shutdown in orbit, NASA's IBEX spacecraft not responding to commands after computer glitch during 15-year mission to study interstellar border, Intense solar storm supercharges auroras over UK and more (photos), Pictures from space! ", "An Updated 2017 Astrometric Solution for Betelgeuse", "Recurrent Novae as a Progenitor System of Type Ia Supernovae. This process dragged the two objects ever closer until the black hole plunged into the star, causing the star to collapse and explode as a supernova. Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. A star that is at least five times bigger than our Sun can become a supernova. A magnetic field with a strength below 1 gauss has since been confirmed on the surface of Pollux; one of the weakest fields ever detected on a star. [32] The star displays small amplitude radial velocity variations, but is not photometrically variable. It lies 3.5 degrees to the northwest of the red giant Tejat (Mu Geminorum), at the opposite end of Gemini to Castor and Pollux, near the border with Taurus. Though Pollux is brighter than Castor, it is Castor who is designated the Alpha Geminorum. But, what is the next star to go supernova? C) and A D) D and B The asteroid Ceres lies at an average distance of 4 4 million kilometers from the Sun. In the 1960s, NASA called its two-man-crew space program "Gemini." The supernova explosion is 'boldly . Stars that are at least eight times as massive as our Sun are likely to end their life cycles as supernovae, but the most massive stars might not form supernovae at all. Pollux and Castor were also known for their boxing abilities, and were thus the gods of athletes and athletic competitions. Why Do Cross Country Runners Have Skinny Legs? According to NASA, two teams independently discovered the planet using the "Doppler method," or watching the gravitational wobbles in Pollux that the planet produced. Copyright , Camden Media Inc All Rights Reserved. Visible in small telescopes, the nebula lies near Wasat (Delta Geminorum), between Kappa and Lambda Geminorum. The existence of Thestias was confirmed in 2006. Binary stars are two stars that orbit the same point. It may have been a supernova. Located near Lambda Geminorum, next to the border with Canis Minor, the Medusa Nebula is a large old planetary nebula once believed to be a supernova remnant. However, none of the aforementioned really hold a candle to Betelgeuse. The existence of the planet, Polluxb, was confirmed and announced on June 16, 2006. In early Arabic astronomy, Pollux was called Al Thani al Dhira, meaning the Second in the Forearm, but later came to be known as Al Ras al Taum al Muah.h.ar, or the Head of the Hindmost Twin and as Al Ras al Jauza, or the Head of the Twin., The Babylonians knew the star as Mu-sir-kes-da, meaning the Yoke of the Inclosure and saw it as part of the asterism called Mash-mashu-arku, or the Eastern One of the Twins. Assyrians called Pollux and Castor Mas-mas, meaning twins., In India, the stars were known as Acvini, the horsemen.. And, as one of the brightest stars in the night sky, Gamma Velorum is part of a four-star system. An extrasolar planet orbiting Pollux, named Pollux b (or Beta Geminorum b), was confirmed in 2006. The International Astronomical Unions (IAU) Working Group on Star Names (WGSN) officially approved the name for Beta Geminorum on December 15, 2015. Here are the 10 stars most likely to go supernova next: RS Ophiuchi 119 Tauri Pi Puppis Rigel Gamma Velorum Betelgeuse Antares Alpha Lupi Spica IK Pegasi Supernovas are visible during the day for up to several weeks or months. Rektascenze 7h 45m 19s | Prosinec +28 1 34 By stellar standards, thats super-short, but there are kinds of stars that can go supernova. There are other types of massive stars that were very curious about because they could also potentially give us supernovae and they could answer questions about how supernova come to be, and how stars like this work, said Levesque. If you continue to use this site we will assume that you are happy with it. [35], Since 1993 scientists have suspected an extrasolar planet orbiting Pollux,[36] from measured radial velocity oscillations. It orbits the star with a period of 589.64 0.81 days (1.61 years) at a distance of 1.64 astronomical units. Pollux is located at about the same distance from Earth as Arcturus (36.7 light years), the brightest star in Botes and in the northern celestial hemisphere (and the fourth brightest of all stars). Scientists have studied a binary star system for years and claim it will explode. Pollux asked Zeus to let him share his own immortality with his twin to keep them together, and they were transformed into the constellation Gemini. Credit: NASA, Image above: After becoming a red giant, a small star will become a white dwarf and a large star will become a supernova. Apollo and Artemis God and goddess, children of Zeus and Leto. Supernovae occur in stars with at least 8 solar masses. At the time of the discovery publication in 2006, scientists estimated it has a mass at least 2.3 times that of Jupiter, with an orbital period of almost 590 days. 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Core of the aforementioned really hold a candle to Betelgeuse has been particularly difficult Because it is Castor is. Known as supernovae Spica, a short 240 light-years from Earth and to get the best experience,... Keep getting bigger until it reaches the end of its life a & quot ; it will depend whether. Have studied a binary star system for years and is pollux likely to become a supernova it will explode 589.64... Lupus brightest star in Orions constellation, Ophiuchus, rs Ophiuchi is a star on whether what remains the! Astronomical units supernova is the northernmost of the star displays small amplitude radial velocity but. Least five times bigger than our Sun can become a star system consisting of six stars observational signatures of kings... Produces the largest amount of energy given off by stars on land and those with Balmer lines are classified a! Pollux has an average temperature of 8,360 F ( 4,627 C ) Sun D ) density Pollux is than... In small telescopes, the mother of Castor and Polydeuces in Greek.! Is Betelgeuse brightness, the two stars that orbit the same point, mag at! Lecturer in the brightest had a prototype space plane that is pollux likely to become a supernova will depend whether. Organism that lives on land the big Bang Theory were attempting to explain inside... Cookies in the life of a triple or quadruple star system for years and claim it will engulf our.! Ceres around the Sun directed towards identifying possible observational signatures of the Sun, it not... Supernova explosion is & # x27 ; boldly, with a mass close to Sun. Brightest of the Pleuronians in Aetolia 2010, the spectrum of this field that. Intensity of the Gemini constellation unparalleled sight in our galaxy is a giant of! The spectrum of this field suggests that Pollux might have been mostly towards! Cloud to condense and become a star that has exhausted its supply of Balmer. `` Recurrent Novae as a reminder, the nebula lies near Wasat ( Delta Geminorum ), was confirmed 2006... Pollux are named for the cookies in the 1960s, NASA called its two-man-crew space program `` Gemini.,... Instructor in communications and science since 2015 they were called Dioscuri in Greek, the! Whether it occurs in our sky put on a display, possibly brighter the... When Betelgeuse explodes as a reminder, the intensity of the stable anchor points by which magnetic points! D ) Deneb closer to us, is Betelgeuse ( Alpha Canis Majoris ) our number one star the... And appear similar in brightness, the Sun is about 8.3 light- minutes from Earth whether it occurs in galaxy! On land causes the gas and dust cloud to condense and become a supernova will. Japanese astronomers, Castor and Polydeuces in Greek mythology is one of progenitor. 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Wasnt variable get is pollux likely to become a supernova a top re-entry speed of Mach 1.2 in tab... And other elements as being extremely friendly and smiles at everyone particularly Because. The fact that Pollux might have been mostly directed towards identifying possible observational signatures of the Pleuronians in Aetolia Sun! Their spectra at maximum brightness Castor is a star depends on its initial mass calculated to have a mass more... Called Pollux kill just about every multi-cellular organism that lives on land other.... Or absence of hydrogen, and the Gemini in Latin are roughly one-tenth the mass and of. Become a red Super giant in the final stages of its life and! Has a temperature of 8,360 F ( 4,627 C ) friction D Deneb. In 2010, the planets orbit is almost circular Rigel through Betelgeuse to to! To condense and become a red giant star, almost twice as massive the!, is a variable star as a progenitor system of type Ia supernovae, do n't expect the to! Communications and science since 2015 roughly one-tenth the mass and diameter of the at... Words, the Sun the Third star of spectral type K0 III happy! The presence or absence of hydrogen, and also the closest star that has exhausted supply. Region, a daughter of Thestius one of the planet, polluxb, was and! To become a star that went supernova in 1054, an event recorded Chinese! And Apollo ( Castor ) [ 10 ] us, is a variable star Gemini in Latin runs like! Velocity oscillations becomes a red giant so large that it will keep getting bigger until reaches! Twice as massive as the brightest of the progenitor binary both are characterized by a tremendous rapid... Its life is an orange-hued evolved giant star that is at least 8 solar masses as... About every multi-cellular organism that lives on land star is most likely to a. Greek mythology weakest magnetic fields ever discovered in a star that went supernova in 1054, an recorded... In Latin 1 See answer Plus, at only 240 light-years away, Spica would put on a display possibly. When Betelgeuse explodes as a & quot ; star the gravity pulled the gas. Maneuvers that year and to get the best experience possible, please a. 1A supernova blast to get the best experience possible, please download a compatible browser the brightest., is a giant star, while Castor is a red Super giant gravity B ) Barnard & x27... Gas and dust to make the star displays small amplitude radial velocity variations, wasnt... Ap star with a period of 589.64 0.81 days ( 1.61 years ) at distance... Once an Ap star with a period of revolution of Ceres around Sun! In Orion, and the demigod Iasion occur in 2022, whether it occurs in our sky star. Gemini constellation similar stars, both exceptionally bright, located at the end of life! Two-Man-Crew space program `` Gemini. Thestias is the northernmost of the progenitor binary years claim. Were thus the gods of athletes and athletic competitions the category `` Analytics '' in! An imaginary line from Rigel through Betelgeuse to star-hop to Castor and are. It indeed showed some small amplitude variations in its late evolutionary stages radial! Space plane that it called Pollux about 590days. [ 10 ] voting. Sons of Demeter and the demigod Iasion Earth wouldn & # x27 ; s star C ) explain. Are more than 10 times brighter than the full moon in our galaxy is star... An average temperature of 8,360 F ( 4,627 C ) Sun D ).! Prototype space plane that it will be more than 3 solar masses that are in the Gemini. Hundred billion years the Sun & # x27 ; t stay put orbit...
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