It is suggested that the three stones represent three stars in the Orion Constellation Rigel, Alnitak and Saiph. It is currently at about 33.8 A.U. Web4.1K views, 50 likes, 28 loves, 154 comments, 48 shares, Facebook Watch Videos from 7th District AME Church: Thursday Morning Opening Session By the way, a light It can be seen from latitudes like those of the southern U.S. The fire and smoke at the center of the hearth represent the Orion Nebula and were interpreted by the Maya (opens in new tab) as the cosmic fire of creation, according to NASA. The Orion Nebula was then independently observed in 1618 by Swiss astronomer Johann Baptist Cysat according to the science communication website The Planets. The inverse-square law says that the flux from a luminous object decreases as the square of its distance. Interstellar lines: The space between stars is not empty, but contains a sparse distribution of gas. There are complications in using the period-luminosity relationship. The bustling stellar nursery is brimming with towering pillars of gas and dust that are home to fledgling stars. Have you ever heard anyone speak of the dog days of summer? First, the relationship itself depends on the chemical composition of the star. NY 10036. That means its a much hotter star than our sun; its surface temperature is about 17,000 degrees Fahrenheit (9,400 Celsius) in contrast to our suns 10,000 degrees F (5,500 C). According to the Guiding light for many a navigator, the North Star is 30 percent closer to our solar system than previously thought, a new study says. It is possible to imagine what our Milky Way might look like looking down on it from outside. In ancient Egypt, the name Sirius signified its nature as scorching or sparkling. A daily update by email. What is the meaning of the word astronomy? Our fascination with the Orion Nebula is not a recent phenomenon. How many light According to ESA, our sun was most likely born (opens in new tab) in a cloud similar to the Orion Nebula, 4.5 billion years ago. From the mid-northern latitudes such as most of the U.S., Sirius rises in the southeast, arcs across the southern sky, and sets in the southwest. The rotation curve, which describes the motion of the galaxy can be used to determine the amount of mass within a given radius from the center. WebYet, we believe that the earth is not 4.5 billion years old as claimed by the evolutionists. It depends. According to Belinda Carlisle, we'll make heaven a place on Earth. Famous star's distance was overestimated in previous studies, astronomers say. Below is a picture of the real Milky Way taken by the satellite COBE. This image makes the Milky Way appear much more galaxy-like and less like the smudge of stars we see stretching across our night sky. All of the other stars we can see with our eyes are farther, some even thousands of light-years away. These hot young stars emit ultraviolet light that carves through the core of the nebula, leaving large cavities void of the thick clouds of gas and dust. Period-luminosity relation: Some stars are regular pulsators, meaning their intensity changes periodically. It is 13.4 billion light-years away, so today we can see it as it was 13.4 billion years ago. Transformers movies ranked, worst to best, Jupiter missions: Past, present and future, The best sci-fi movies and TV shows on Paramount Plus in M04, What equipment do you need to see and photograph the planets, Annular solar eclipse 2023: Everything you need to know about North America's 'ring of fire' eclipse. The varying density and temperature of Earths air affect starlight, especially when were seeing the star low in the sky. In 2016, the deepest and most comprehensive view (opens in new tab) of the Orion Nebula, revealed even more planet-mass objects and brown dwarfs, previously reported on Space.com. Sirius is well known as the Dog Star, because its the chief star in the constellation Canis Major the Greater Dog. Typically, RR Lyrae stars are less luminous than Cepheids, but they are much more common. The Andromeda galaxy is almost 3 million light-years away from earth. (Image credit: NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team). And it lies just 8.6 light-years away in the constellation Canis Major the Greater Dog. But a new study reveals that its distance to Earth may have been grossly overestimated. Since light travels at about #186,300# miles per second, with #86,400# seconds per day and about #365# days per year, that works out at about: #186300xx86400xx365 ~~ 5,875,000,000,000# miles. SpaceX Dragon debris lights up sky in bright fireball over western US during reentry (video), Europe's JUICE Jupiter probe has an antenna glitch in deep space, Your monthly guide to stargazing & space science, Subscribe for just 1 per issue with our Spring Savings, Issues delivered straight to your door or device, Learn more about the Orion Nebula with this free course from the, View one of the largest near-infrared high-resolution mosaics of the Orion A molecular cloud with the, Read about the supersonic bullets of gas in the Orion Nebula described by the. Normally, the only objects that outshine Sirius in our heavens are the sun, moon, Venus, Jupiter, Mars and Mercury (and usually Sirius outshines Mercury, too). The spectrum is the array of colors or wavelengths that is obtained when light is dispersed.) The most luminous Cepheids can be used to estimate distances to objects as far as 12,000,000 light years away. The star is also a type of cosmological yardstick used by researchers to measure great cosmic distances out to billions of light-years. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.Why do we calculate light-years?A light-year is a measurement of distance in space. Light crosses that distance in about 1 1/2 seconds. Web: One parsec is approximately 3.26 light years. The physics of their pulsations is such that the period of one oscillation is related to the luminosity of the star. Deep view of the Orion Nebula, imaged from multiple exposures using the HAWK-I infrared camera on the European Southern Observatory's Very Large Telescope in Chile. One light-year is about 6 trillion miles (9 trillion km). Its always easy to spot as the brightest point of light in its region of sky (unless a planet happens to be near it, which none are in early 2023). This is because our eyes contain two different kinds of photoreceptors cones and rods. At 8.6 light-years distance, Sirius is one of the nearest stars to us after the sun. Distance is a useful tool on the galactic scale. Space is part of Future US Inc, an international media group and leading digital publisher. Sirius is always easy to find. An image of the Andromeda galaxy, as seen by NASA's GALEX observatory. Heres how it works. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says. This is what Indra had wanted to hear, and then he welcomed both the prince and the dog through the gates of heaven. The gatekeeper, Indra, welcomed the prince but denied Svana entrance. (Also see "New Supernova Found 'Next Door'Getting Brighter."). To approach a question 400 million years in the making, researchers turned to mudskippers, blinking fish that live partially out of water. The first observation of the Orion Nebula with a telescope was in 1610 by French scholar Nicolas-Claude Fabri de Peiresc according to the British Science Museum (opens in new tab). The entire scene is sculpted by stellar winds ejected by young stars that also emit powerful ultraviolet light. When we use powerful telescopes to look at distant objects in space, we are actually looking back in time. In India, Sirius is sometimes known as Svana, the dog of Prince Yudhisthira. It is about 93 million miles away. The colors of the Orion Nebula can be attributed to different chemical elements. Deborah Byrd created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. The seven heavens and the earth perpetually celebrate Gods praise (sura 17:44) and by their majestic design provide evidence that God indeed has the power to In fact, these changes are simply what happens when such a bright star as Sirius shines through the blanket of Earths atmosphere. Get breaking space news and the latest updates on rocket launches, skywatching events and more! According to the Rochester Institute of Technology (opens in new tab) (RIT), cone cells are active at higher light levels and can perceive color whereas at low light levels rod cells sense light but cannot perceive color or fine details. If you need help processing your images, check out our guide on the best photo editing apps for astrophotography. "This system is known to contain two other stars in addition to the Cepheid stars, but there may be yet another unseen object orbiting Polaris a massive orbiting planet for example," he added. Does eating close to bedtime make you gain weight? Venus, Earth, and Mars on November 18, 2020, as seen via the NASA-ESA Solar Orbiter ( SolO ). What schools are renowned for their astronomy programs? So, the Sun's light takes about 8.3 minutes to reach us. Perihelion/Nearest distance 1.55495 10-5 light-years. The moon is 238,854 miles from earth. 1. The further a star is, the more absorption will be observed, since the light has passed through more of the interstellar medium. Although the light year is a commonly used unit, astronomers prefer a different unit called the parsec (pc). 2 hours of sleep? By the way, a light year is nearly 6 trillion miles (9.4 trillion km)! In late summer, it appears in the east before sunrise, near the sun in our sky. 55K views, 2.4K likes, 2.7K loves, 2.5K comments, 240 shares, Facebook Watch Videos from ABS-CBN News: Healing Eucharist Mass | Teleradyo (30 April 2023) The universe is filled with billions of galaxies, all farther away than this. This is very helpful for mapping the disk portion of our Galaxy. is the average distance between the Sun and the Earth, which is about 8.3 light minutes. Web4.1K views, 50 likes, 28 loves, 154 comments, 48 shares, Facebook Watch Videos from 7th District AME Church: Thursday Morning Opening Session In 2021, Daisy completed a PhD in plant physiology and also holds a Master's in Environmental Science, she is currently based in Nottingham, U.K. Hubble telescope eyes galactic site of distant star explosion (video), China's Zhurong Mars rover finds signs of recent water activity on Red Planet, SpaceX Falcon Heavy rocket aborts triple satellite launch at last minute. A kilometer, or kilometre, is a unit of length Although white to blue-white in color, Sirius might be called a rainbow star, as it often flickers with many colors. The position of Sirius is RA: 06h 45m 08.9s, dec: -16 42 58. Star trailsthe results of a long exposure and Earth's rotationsurround the North Star. 22497 views So, we see Andromeda as it was 2.5 million years in the past. One light-year is equal to 9.46 1012 kilometers. RR Lyrae stars are similar to Cepheid Variables. Webentertainment, news presenter | 4.8K views, 28 likes, 13 loves, 80 comments, 2 shares, Facebook Watch Videos from GBN Grenada Broadcasting Network: GBN News 28th April Distance Between Heaven and Earth. STDs are at a shocking high. How can this be? A light-year is the distance light travels in one Earth year. The star was associated with the Egyptian gods Osiris, Sopdet and other gods. Since light travels at about 186,300 miles per second, with 55K views, 2.4K likes, 2.7K loves, 2.5K comments, 240 shares, Facebook Watch Videos from ABS-CBN News: Healing Eucharist Mass | Teleradyo (30 April 2023) By measuring the motions of a large number of stars of a given class, we can estimate their average distance from their average motion. Last year alone, there were over 47,000 earthquakes in Alaska and surrounding regions. In short, at a maximum velocity of 56,000 km/h, Deep Space 1 would take over 81,000 years to traverse the 4.24 light-years between Earth and Proxima Centauri. Credit: NASA, ESA, P. Oesch (Yale University), G. Brammer (STScI), P. van Dokkum (Yale University), and G. Illingworth (University of California, Santa Cruz). The shimmering and color changes happen for other stars, too, but these effects are more noticeable for Sirius because Sirius is so bright. By the way, a light year is nearly 6 trillion miles (9.4 trillion km)! Part boulder, part myth, part treasure, one of Europes most enigmatic artifacts will return to the global stage May 6. The flickering colors are especially easy to notice when you spot Sirius low in the sky. Because we dwell within the Milky Way Galaxy, it is impossible for us to take a picture of its spiral structure from the outside. The billowing clouds of gas and dust are located in the Orion Constellation, just below Orion's Belt. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. To convert to absolute distances, we ideally need to measure the distance to a nearby Cepheid with another, more direct, method. Astrophotography with a film camera: Is it possible? However, one by one the brothers all abandoned the search until only Yudhisthira and his dog, Svana, were left. In the central region of the Orion Nebula are four bright stars in an open star cluster known as the Trapezium due to their trapezoidal arrangement, according to NASA (opens in new tab). Analyzing the apparent motion of the cluster can give us the distance to it. If Voyager were to travel to the center of our Galaxy, it would take more than 450,000,000 years to travel the 8 kpc. The Bible doesnt say how far heaven is from Earth, though some theologians believe that there is enough evidence in Scripture to conclude that it exists somewhere in The brightness, twinkling and color changes sometimes prompt people to report Sirius as a UFO! Although the light year is a commonly used unit, astronomers prefer a different unit called the parsec (pc). The 2023 EarthSky lunar calendar. A black hole has been discovered 1,000 light-years from Earth, making it the closest black hole to our solar system ever found. An example of the importance of this triadic pattern within Maya life were the three hearth stones (or Ox Te Tun) found in every Maya Kitchen, according to Mirador Park. Distance Information. Ancient Egyptians noted that Sirius rose just before the sun each year immediately prior to the annual flooding of the Nile River. New York, Although the black hole Scientists and astronomers sometimes use parsecs to express the distance to stars or galaxies, instead of light years. (See the Nearest Stars page for more information on Hipparcos measurements.). WebA light-year is a unit of length used to measure astronomical distances. The distance from Earth to the Moon is about 384,400 km. At 17.3 km/s, it would take Voyager over1,700,000,000 years to traverse the entire length of the Milky Way. Who buys lion bones? Only one ancient account mentions the existence of Xerxes Canal, long thought to be a tall tale. That sounds huge, and it is, at least until we start comparing it to other galaxies. For some long COVID patients, exercise is bad medicine, Radioactive dogs? (See star pictures.). Inside South Africas skeleton trade. But Svana, who had given his heart freely, chose to follow none but Yudhisthira. That is only 400 million years after the big bang. A good astrophotography guide for capturing a stunning image of the Orion Nebula can be found on the astrophotography website AstroBackyard (opens in new tab). Before joining us, Daisy completed an editorial internship with the BBC Sky at Night Magazine and worked at the National Space Centre in Leicester, U.K., where she enjoyed communicating space science to the public. By mid-April, Sirius is setting in the southwest in mid-evening. As part of the constellation Canis Major the Greater Dog, Sirius also earns the nickname of the Dog Star. A light year is the distance that light travels in one year. There are brighter stars than Sirius in terms of actual energy and light output, but they are farther away and hence appear dimmer. The disk and center region of our Galaxy are readily recognizable. Though if conditions are right it is possible to see the blue-green hue emitted by oxygen ions in the Orion Nebula, according to lifestyle and entertainment magazine Jersey's Best (opens in new tab). Related: Budget telescopes under $500: Picks from Celestron, Meade and Orion If we know the luminosity of a star (for instance, we have a measured parallax for one star of the same type and know that others of the same type will have similar luminosities), we can measure its apparent brightness and then solve for its distance. If we measure the period of such a star, we can calculate its luminosity. Parallaxes give us distances to stars up to perhaps a few thousand light years. Visit our corporate site (opens in new tab). WebI estimate 51,600 light years. Some of these galaxies are much farther away. The prince said that, without his dog, he would forsake even heaven. ", "New Galaxy Maps to Help Find Dark Energy Proof? What types of jobs are available for those who hold a degree in astronomy? When you purchase through links on our site, we may earn an affiliate commission. A parsec, equal to 3.26 light years, is defined as the distance at which 1 Astronomical Unit subtends an angle of 1 second of arc (1/3600 of a degree) When we use the parsec for really large distances, we often put a Webeach distance to light-years. WebI'm afraid Heaven is far, FAR from earth. So, when we see this star today, were actually seeing it as it was 4.3 years ago. Earth is about eight light minutes from the Sun. WebThe closest known galaxy to Earth is the Canis Major Dwarf Galaxy, at 25,000 light years from the Sun. It is the distance that light can travel in a year (almost 365.25 days). Not only were the globular clusters great distances away, but the Sun did not lie at the center of their distribution, which placed the Sun far from the center of the Galaxy. The smaller the number, the brighter the star. Sirius is classified by astronomers as an A type star. That is a 6 with 12 zeros behind it! The Orion Nebula is part of a larger stellar network the Orion Molecular Cloud Complex (also known as the Orion Complex), one of the most active star-forming regions visible in the sky, according to the science communication website The Planets (opens in new tab). As the Orion Constellation is easy to locate (opens in new tab) and visible throughout the world from both the Northern and Southern Hemispheres, the Orion Nebula nestled within the constellation is a popular stargazing target for astronomers. How are Hubble Space Telescope images made? According to researchers, the Orion Complex consists of several molecular clouds including the Lambda Orionis Clouds, the Orion A Cloud (which includes the Orion Nebula) and the Orion B Cloud (which includes the Flame Nebula), a complete list of Orion Complex nebulae can be found in a comprehensive paper published in the Astrophysical Journal (opens in new tab). WebThe year used by the International Astronomical Union is 365.25 days. What is the difference between astronomy and astrology? They have relatively short periods, typically of about a day or less, and all RR Lyrae stars have approximately the same luminosity. Under Orion's Belt, are three dimmer stars that form Orion's sword, then in the middle of the sword is the Orion Nebula. 16K views, 545 likes, 471 loves, 3K comments, 251 shares, Facebook Watch Videos from EWTN: Starting at 8 a.m. Unauthorized use is prohibited. Brown dwarfs are sometimes referred to as 'failed' stars as they're too small to sustain nuclear fusion in their cores. A unique and beautiful poster-sized calendar showing phases of the moon every night of the year. Moving clusters: Clusters of stars, such as the Pleiades and Hyades star clusters, travel together. 17K views, 519 likes, 455 loves, 3.7K comments, 232 shares, Facebook Watch Videos from EWTN: Starting at 8 a.m. The faintest object the human eye can see under the best conditions is +6 on the astronomical magnitude scale, according to Harvard University (opens in new tab). The period-luminosity relation was discovered by Henrietta Swan Leavitt in 1908 when she was studying Cepheid Variable stars in the Magellanic Clouds. Known to fade and brighten over a four-day period, this celestial beacon of true north is considered the closest and brightest member of a class of stars called Cepheids that change in brightness over time. The farther an object is, the farther in the past we see it. For this reason, it's vital for our understanding of the cosmos that scientists get a reliable grip on the North Star's true distance, emphasized Turner, whose study will appear in Astrophysical Journal Letters. Thank you! That is a 6 with 12 zeros behind it! The year used by the International Astronomical Union is 365.25 days. You could look up the numbers easily enough: The astronomical unit (the average distance between the Earth and the Sun) is defined as exactly 149,597,870,700 As one of the brightest nebulas in the sky, it comes as no surprise that the Orion Nebula was the first nebula to be photographed. Science news, great photos, sky alerts. The Sun does not lie near the center of our Galaxy. Sirius is roughly eight times as far from the Belt as the Belt is wide. The visual magnitude of Sirius is -1.44, lower brighter than any other star. The Egyptian new year was celebrated with a festival known as the Coming of Sopdet. Something went wrong while submitting the form. But we do know that our Milky Way has a spiral nature from observations made from within our Galaxy (though whether or not it is a barred spiral is still being debated). That significantly revises the previously accepted value of 434 light-years, which was obtained by the European star-mapping satellite Hipparcos in the 1990s. | NASA Space Place NASA Science for Kids Sopdet who might have an even closer association with the star Sirius began as an agricultural deity in Egypt, also closely associated with the Nile. One light-year is about 6 trillion miles (9 trillion km). What Is a Light-Year? All rights reserved. To represent this, the beautiful spiral galaxy Messier 74 was used, as it thought to be a similar galaxy to ours. Plus, anyone familiar with the constellation Orion can simply draw a line through Orions Belt to find this star. A new discovery raises a mystery. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. 17K views, 519 likes, 455 loves, 3.7K comments, 232 shares, Facebook Watch Videos from EWTN: Starting at 8 a.m. Related: What's the story behind the stars? According to NASA, brown dwarfs are not quite massive enough (opens in new tab) to be stars but are more massive than planets (between 13 and 80 times the mass of Jupiter.). Even with these (and other) complications, Cepheid Variables provide an excellent way to measure the relative distances. All rights reserved, "New Supernova Found 'Next Door'Getting Brighter. From the Northern Hemisphere, Sirius arcs across in the southern sky. The first biblical clue that the earth is not 4.5 billion years old is found in Genesis 1-2 when it reveals that the first human parents were created by Why do astronomers use scientific notation to describe sizes? This stone has a mysterious past beyond British coronations, Ultimate Italy: 14 ways to see the country in a new light, 6 unforgettable Italy hotels, from Lake Como to Rome, A taste of Rioja, from crispy croquettas to piquillo peppers, Trek through this stunning European wilderness, Land of the lemurs: the race to save Madagascar's sacred forests, Photograph by James Forte, National Geographic. If you can measure the average speed of stars as they move around the Galactic Center and their distance from the Galactic Center, you can make a plot called a "rotation curve". Healing Eucharist Mass | Teleradyo (30 April 2023) - Facebook Other molecules like carbon monoxide also emit radio waves. The Orion Nebula (Messier 42) is a popular target for astronomers and astrophotographers. Light takes about 8 minutes to make that journey. Statistically, stars move at about the same rate; therefore, the stars that appear to have larger motions are nearer. Interestingly, the size of our own Galaxy was debated for a long while. Sirius is behind the sun as seen from Earth in Northern Hemisphere summer. From the Southern Hemisphere, Sirius arcs high overhead. The new results also located nearly a half dozen stars that appear to be surrounding the North Star and show signs that they have all once belonged to the same star cluster, which has now dispersed. Osiris was an Egyptian god of life, death, fertility and rebirth of plant life along the Nile. 2. Your submission has been received! Although the floods could bring destruction, they also brought new soil and new life. In 2016, NASA's Hubble Space Telescope looked at the farthest galaxy ever seen, called GN-z11. The oldest one found so far in GN-z11 (shown in the close up image). But with the help of a pair of binoculars or a telescope, you should be able to pick out more of Orion's distinguishing features including the bright central part of the nebula called the "Huygenian region" (named after the 17th-century astronomer Christiaan Huygens). At long last they came to the gates of heaven. (See "New Galaxy Maps to Help Find Dark Energy Proof?"). Future US, Inc. Full 7th Floor, 130 West 42nd Street, To find the Orion Nebula, you first need to locate the constellation Orion, then find Orion's Belt. Once a mighty star, the Pup today is an Earth-sized ember, too faint to be seen without a telescope. The average distance from the sun to the earth is 92,955,817 miles. If you need imaging gear, consider our best cameras for astrophotography and best lenses for astrophotography.). The predicted rotation curves for many galaxies (in particular, spiral galaxies like the Milky Way) don't match the observed ones, which led to the discovery of dark matter as an explanation for this discrepancy. Now on sale! In 2006, the Hubble Space Telescope captured the sharpest view of the Orion Nebula ever seen, a stunning image revealing more How does Earth look from outer space? 1 A.U. More: Astrophotography for beginners: How to shoot the night sky. If it could travel at the speed of light, an impossibility due to Special Relativity, it would still take over 26,000 years to arrive! Treat yourself! Axolotls and capybaras are TikTok famousis that a problem? The Orion Nebula, also known as Messier 42 (or M42 for short), is the nearest star-forming region to Earth, located approximately 1,350 light-years away and is about 2 million years old according to NASA Jet Propulsion Laboratory (opens in new tab). Oops! A kilometer, or kilometre, is a unit of length equal to 1,000 meters, or about 0.621 miles. Secondly, the absorption of certain wavelengths of light by the interstellar medium can affect the apparent brightness of the star and therefore must be accounted for. ", Do Not Sell or Share My Personal Information. Create Your Free Account or Sign In to Read the Full Story. Unlike Hubble, our eyes cannot distinguish the vibrant dues of the Orion Nebula. However, its too far south in the sky to see easily from mid-northern latitudes. The North Star's claim to fame is due to its fixed position in the sky for Northern Hemisphere observersaligned with Earth's northern axiswhile other stars appear to wheel around it. An image of distant galaxies captured by the NASA/ESA Hubble Space Telescope. Copyright 1996-2015 National Geographic Society, Copyright 2015-2023 National Geographic Partners, LLC. around the world. The Milky Way is about 1,000,000,000,000,000,000 km (about 100,000 light years or about 30 kpc) across. For most space objects, we use light-years to describe their distance. Inverse-square law: The apparent brightness or magnitude of a star depends both on its intrinsic brightness or luminosity (how bright the star actually is rather than how bright it seems) and its distance from us. How this animal can survive is a mystery. ", Copyright 1996-2015 National Geographic SocietyCopyright 2015-2023 National Geographic Partners, LLC. Coordinates: 05h 35m 17.3s (right ascension), -05 23' 28" (declination), Season: December through March (best in January). Our Solar System - Cosmic Distances NASA Solar System Exploration Cepheids, named after Delta Cephei, the first and most luminous of its class to be identified, make excellent distance indicators, because of their periodicity and extraordinary brightness. Today, she serves as Editor-in-Chief of this website. A galaxy can have millions or billions of stars. The large chasm carved by the Trapezium conveniently faces Earth, allowing observers to peer deep into the nebula's "heart" to view the rich tapestry of star formation within. Bottom line: Sirius is the brightest star in the night sky as seen from Earth and is visible from both hemispheres. The little-known history of the Florida panther. A new report released by the Alaska Earthquake Center shows a quiet year for earthquakes in 2022. How many years is a light-year?Light-year is the distance light travels in one year. Credit: ESA/Hubble & NASA, RELICS; Acknowledgment: D. Coe et al.
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