{"id":427815,"date":"2024-02-26T01:35:35","date_gmt":"2024-02-25T23:35:35","guid":{"rendered":"https:\/\/osr.org\/?p=427815"},"modified":"2024-02-26T01:35:45","modified_gmt":"2024-02-25T23:35:45","slug":"what-is-the-pleiades-star-cluster","status":"publish","type":"post","link":"https:\/\/osr.org\/en-uk\/blog\/astronomy-uk\/what-is-the-pleiades-star-cluster\/","title":{"rendered":"What Is the Pleiades Star Cluster?"},"content":{"rendered":"<p><span style=\"font-weight: 400\">Nestled like a cosmic jewel box in the night sky, the Pleiades star cluster, or the &#8220;Seven Sisters&#8221;, have twinkled enticingly at stargazers for millennia. These stellar beauties are not just a treat for the naked eye but a treasure trove for astronomers who seek to unravel the mysteries of the universe. But what exactly is the Pleiades?<\/span><\/p>\n<p><span style=\"font-weight: 400\">In this article, we&#8217;ll take a tour of this fascinating celestial landmark. We&#8217;ll explore everything from how it got its name, related ancient mythology, and all the facts and figures you need to know!<\/span><\/p>\n<h2><span style=\"color: #15acdf\">What Is the Pleiades Star Cluster?<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-427837 size-full\" title=\"Pleiades Star Cluster\" src=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Pleaides-Star-Cluster.jpg\" alt=\"Pleiades Star Cluster\" width=\"758\" height=\"466\" srcset=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Pleaides-Star-Cluster.jpg 758w, https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Pleaides-Star-Cluster-300x184.jpg 300w, https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Pleaides-Star-Cluster-640x393.jpg 640w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/p>\n<p><span style=\"font-weight: 400\">Located in the <a href=\"https:\/\/osr.org\/en-uk\/blog\/astronomy-uk\/what-are-constellations\/\" target=\"_blank\" rel=\"noopener\">constellation<\/a> of Taurus, the Pleiades star cluster is also affectionately known as the &#8216;Seven Sisters&#8217;. Officially named Messier 45, it is an asterism, or pattern of stars, that is among the nearest star clusters to Earth and can be observed with the naked eye on a clear night.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Viewed through a telescope, the Pleiades reveals a dazzling spectacle with hundreds of stars cloaked in a silvery-blue nebula. More than just an extraordinary sight, the cluster is a cosmic laboratory for astronomers studying stellar formation and evolution.<\/span><\/p>\n<h2><span style=\"color: #15acdf\">How Did the Pleiades Get its Name?<\/span><\/h2>\n<div class=\"container-lazyload preview-lazyload container-youtube js-lazyload--not-loaded\"><a href=\"https:\/\/youtu.be\/-CrLWmwLSTg?si=fka72aMzgsjsVbp9\" class=\"lazy-load-youtube preview-lazyload preview-youtube\" data-video-title=\"The Pleiades - The Seven Star Sisters!\" title=\"Play video &quot;The Pleiades - The Seven Star Sisters!&quot;\">https:\/\/youtu.be\/-CrLWmwLSTg?si=fka72aMzgsjsVbp9<\/a><noscript>Video can&#8217;t be loaded because JavaScript is disabled: <a href=\"https:\/\/youtu.be\/-CrLWmwLSTg?si=fka72aMzgsjsVbp9\" title=\"The Pleiades - The Seven Star Sisters!\">The Pleiades &#8211; The Seven Star Sisters! (https:\/\/youtu.be\/-CrLWmwLSTg?si=fka72aMzgsjsVbp9)<\/a><\/noscript><\/div>\n<p><span style=\"font-weight: 400\">The name &#8216;Pleiades&#8217; dates back to ancient Greece, most likely taken from the word &#8220;plein&#8221;, meaning &#8220;to sail&#8221;. As a popular point of reference in the night sky, the star cluster guided many an ancient navigator across the Mediterranean.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Later, the name would also be used in Greek mythology, referencing seven sister nymphs who were the daughters of Pleione. These celestial siblings \u2014 Maia, Electra, Taygeta, Alcyone, Celaeno, Sterope, and Merope \u2014 were said to be fashioned into stars by Zeus to forever escape the unrelenting pursuit of <a href=\"https:\/\/osr.org\/en-uk\/blog\/astronomy-uk\/what-is-the-orion-constellation\/\" target=\"_blank\" rel=\"noopener\">Orion<\/a>.<\/span><\/p>\n<h2><span style=\"color: #15acdf\">History of the Pleiades<\/span><\/h2>\n<div id=\"attachment_427900\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-427900\" class=\"size-full wp-image-427900\" title=\"Nebra Sky Disc\" src=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Nebra-Sky-Disc-1.png\" alt=\"Nebra Sky Disc\" width=\"758\" height=\"466\" srcset=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Nebra-Sky-Disc-1.png 758w, https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Nebra-Sky-Disc-1-300x184.png 300w, https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Nebra-Sky-Disc-1-640x393.png 640w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><p id=\"caption-attachment-427900\" class=\"wp-caption-text\"><p class=\"caption-text\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Nebra_Scheibe.jpg\">Dbachmann<\/a>, <a href=\"http:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/\">CC BY-SA 3.0<\/a>, via Wikimedia Commons<\/p><\/figure> <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Nebra_Scheibe.jpg\">Dbachmann<\/a>, <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/\">CC BY-SA 3.0<\/a>, via Wikimedia Commons<\/p><\/div>\n<p><span style=\"font-weight: 400\">The Pleiades star cluster has been a noted celestial feature for thousands of years. Indeed, historians believe the asterism appears on the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Nebra_sky_disc\">Nebra sky disc<\/a>, a decorative bronze disc depicting the night sky that dates back over 3,500 years. However, more than simply capturing our ancestors&#8217; imaginations, the star cluster has also been an invaluable tool for sailors navigating the high seas and farmers sowing their crops in rhythm with the seasons.<\/span><\/p>\n<p><span style=\"font-weight: 400\">In modern astronomy, M45 is a crucial benchmark for celestial calibration, a cosmic ruler by which astronomers gauge the universe&#8217;s vast expanse. It&#8217;s also an essential object for astrophysicists studying the formation of stars, who peer into the heart of the Pleiades to glean insights into the genesis of stars and planetary systems.<\/span><\/p>\n<h2><span style=\"color: #15acdf\">M45 Facts and Figures<\/span><\/h2>\n<div class=\"container-lazyload preview-lazyload container-youtube js-lazyload--not-loaded\"><a href=\"https:\/\/youtu.be\/lIoRS8dS9dY?si=nDBC1AceKS1fg2jz\" class=\"lazy-load-youtube preview-lazyload preview-youtube\" data-video-title=\"Pleiades | The Seven Sisters\" title=\"Play video &quot;Pleiades | The Seven Sisters&quot;\">https:\/\/youtu.be\/lIoRS8dS9dY?si=nDBC1AceKS1fg2jz<\/a><noscript>Video can&#8217;t be loaded because JavaScript is disabled: <a href=\"https:\/\/youtu.be\/lIoRS8dS9dY?si=nDBC1AceKS1fg2jz\" title=\"Pleiades | The Seven Sisters\">Pleiades | The Seven Sisters (https:\/\/youtu.be\/lIoRS8dS9dY?si=nDBC1AceKS1fg2jz)<\/a><\/noscript><\/div>\n<p><span style=\"font-weight: 400\">The Pleiades is a favourite night sky feature for many <a href=\"https:\/\/osr.org\/en-uk\/blog\/tips-gifts-en-uk\/gifts-for-stargazers\/\" target=\"_blank\" rel=\"noopener\">stargazers<\/a>, but what makes the asterism so unique? Aside from its aesthetic beauty, here are some of the headline figures that make the Seven Sisters such a fascinating object:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><b>Distance from Earth:<\/b><span style=\"font-weight: 400\"> Merely 444 light-years away, the Pleiades is the closest Messier object to Earth.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Open Star Cluster<\/b><span style=\"font-weight: 400\">: M45 is an open star cluster comprising hot, blueish B-type stars surrounded by reflection nebulae.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Age:<\/b><span style=\"font-weight: 400\"> With an estimated age of 100 million years, the <a href=\"https:\/\/osr.org\/en-uk\/blog\/astronomy-uk\/what-is-a-star\/\" target=\"_blank\" rel=\"noopener\">stars<\/a> in the Pleiades are cosmic infants, still swaddled in nebulous material.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Number of Stars:<\/b><span style=\"font-weight: 400\"> Boasting over 1,000 confirmed members, it&#8217;s quite a celestial gathering!<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Apparent Magnitude:<\/b><span style=\"font-weight: 400\"> With an apparent magnitude of 1.6, M45 is easy to spot with the naked eye on a clear night, even by city dwellers.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Mythology:<\/b><span style=\"font-weight: 400\"> Many cultures, from the ancient Greeks to Native Americans, have historically celebrated and mythologised the Pleiades. Some civilisations saw the cluster as seven sisters, while others viewed it as a mother hen with her chicks!<\/span><\/li>\n<\/ul>\n<h2><span style=\"color: #15acdf\">How to View the Pleiades<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-427816\" title=\"How to Spot the Pleiades\" src=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/How-to-Spot-the-Pleiades.jpg\" alt=\"How to Spot the Pleiades\" width=\"758\" height=\"466\" srcset=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/How-to-Spot-the-Pleiades.jpg 758w, https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/How-to-Spot-the-Pleiades-300x184.jpg 300w, https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/How-to-Spot-the-Pleiades-640x393.jpg 640w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/p>\n<p><span style=\"font-weight: 400\">Gazing upon the Pleiades with the naked eye is enchanting in any location. However, a more tailored approach is advisable to truly appreciate the grandeur of M45. Ideally, find a <a href=\"https:\/\/osr.org\/en-uk\/blog\/osrguide\/where-are-the-best-uk-dark-sky-sites\/\" target=\"_blank\" rel=\"noopener\">dark sky<\/a> location away from glaring city lights, where the stars can shine at their brightest.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Autumn and winter months offer the clearest views of M45, peaking in January. Armed with a simple pair of binoculars, you can transform your celestial experience from splendid to spectacular, as this will reveal the delicate companions of Pleiades&#8217; brightest stars that you can see with the unaided eye. Furthermore, for those seeking a deeper dive into the starry sea, a <a href=\"https:\/\/osr.org\/en-uk\/blog\/osrguide\/osr-telescope\/\" target=\"_blank\" rel=\"noopener\">telescope<\/a> will bring the cluster\u2019s ethereal backdrop into stunning clarity and uncover the nebulous lace that swaddles these stellar gems.<\/span><\/p>\n<h2><span style=\"color: #15acdf\">OSR Star Finder App<\/span><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-240300\" title=\"OSR Star Finder App\" src=\"https:\/\/osr.org\/wp-content\/uploads\/2023\/07\/OSR-Star-Finder-App.jpg\" alt=\"OSR Star Finder App\" width=\"720\" height=\"480\" srcset=\"https:\/\/osr.org\/wp-content\/uploads\/2023\/07\/OSR-Star-Finder-App.jpg 720w, https:\/\/osr.org\/wp-content\/uploads\/2023\/07\/OSR-Star-Finder-App-300x200.jpg 300w, https:\/\/osr.org\/wp-content\/uploads\/2023\/07\/OSR-Star-Finder-App-640x427.jpg 640w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/h2>\n<p><span style=\"font-weight: 400\">Armed with a dash of curiosity and the right tools, the sky is not the limit but the canvas for a never-ending story written in celestial ink. By downloading the<\/span><a href=\"https:\/\/osr.org\/blog\/osr-en\/star-finder-app\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\"> OSR Star Finder App<\/span><\/a><span style=\"font-weight: 400\">, you can learn more about a host of fascinating astronomical bodies, from the mesmerising Pleiades to planets, stars, and constellations. Download the app today, set out on your own cosmic quest, and become part of the constellation of observers who have marvelled at the heavens above!<\/span><\/p>\n<p style=\"text-align: center\"><a class=\"button button-orange medium arrow\" href=\"https:\/\/osr.org\/blog\/osr-en\/star-finder-app\/\">OSR Star Finder App<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nestled like a cosmic jewel box in the night sky, the Pleiades star cluster, or the &#8220;Seven Sisters&#8221;, have twinkled enticingly at stargazers for millennia. These stellar beauties are not just a treat for the naked eye but a treasure trove for astronomers who seek to unravel the mysteries of the universe. But what exactly [&hellip;]<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1375],"tags":[],"class_list":["post-427815","post","type-post","status-publish","format-standard","hentry","category-astronomy-uk"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is the Pleiades Star Cluster? - Online Star Register<\/title>\n<meta name=\"description\" content=\"Join us as we discover the history, myths, and significance of the Pleiades, one of the most observed clusters in our galactic neighbourhood.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/osr.org\/en-uk\/blog\/astronomy-uk\/what-is-the-pleiades-star-cluster\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is the Pleiades Star Cluster?\" \/>\n<meta property=\"og:description\" content=\"Join us as we discover the history, myths, and significance of the Pleiades, one of the most observed clusters in our galactic neighbourhood.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/osr.org\/en-uk\/blog\/astronomy-uk\/what-is-the-pleiades-star-cluster\/\" \/>\n<meta property=\"og:site_name\" content=\"Online Star Register\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-25T23:35:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-25T23:35:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Pleaides-Star-Cluster.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"758\" \/>\n\t<meta property=\"og:image:height\" content=\"466\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sebastian Wolf\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"What Is the Pleiades Star Cluster?\" \/>\n<meta name=\"twitter:description\" content=\"Join us as we discover the history, myths, and significance of the Pleiades, one of the most observed clusters in our galactic neighbourhood.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/osr.org\/wp-content\/uploads\/2024\/02\/Pleaides-Star-Cluster.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sebastian Wolf\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\n\t    \"@context\": \"https:\\\/\\\/schema.org\",\n\t    \"@graph\": [\n\t        {\n\t            \"@type\": \"Article\",\n\t            \"@id\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/blog\\\/astronomy-uk\\\/what-is-the-pleiades-star-cluster\\\/#article\",\n\t            \"isPartOf\": {\n\t                \"@id\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/blog\\\/astronomy-uk\\\/what-is-the-pleiades-star-cluster\\\/\"\n\t            },\n\t            \"author\": {\n\t                \"name\": \"Sebastian Wolf\",\n\t                \"@id\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/#\\\/schema\\\/person\\\/37c679787a484097f8cdb9543ad18e09\"\n\t            },\n\t            \"headline\": \"What Is the Pleiades Star Cluster?\",\n\t            \"datePublished\": \"2024-02-25T23:35:35+00:00\",\n\t            \"dateModified\": \"2024-02-25T23:35:45+00:00\",\n\t            \"mainEntityOfPage\": {\n\t                \"@id\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/blog\\\/astronomy-uk\\\/what-is-the-pleiades-star-cluster\\\/\"\n\t            },\n\t            \"wordCount\": 844,\n\t            \"image\": {\n\t                \"@id\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/blog\\\/astronomy-uk\\\/what-is-the-pleiades-star-cluster\\\/#primaryimage\"\n\t            },\n\t            \"thumbnailUrl\": \"https:\\\/\\\/osr.org\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/Pleaides-Star-Cluster.jpg\",\n\t            \"articleSection\": [\n\t                \"Astronomy\"\n\t            ],\n\t            \"inLanguage\": \"en-UK\"\n\t        },\n\t        {\n\t            \"@type\": \"WebPage\",\n\t            \"@id\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/blog\\\/astronomy-uk\\\/what-is-the-pleiades-star-cluster\\\/\",\n\t            \"url\": \"https:\\\/\\\/osr.org\\\/en-uk\\\/blog\\\/astronomy-uk\\\/what-is-the-pleiades-star-cluster\\\/\",\n\t            \"name\": \"What Is the Pleiades Star Cluster? 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