{"id":3914,"date":"2023-10-19T10:42:11","date_gmt":"2023-10-19T10:42:11","guid":{"rendered":"https:\/\/msealey.co.uk\/K12-Journeys\/?post_type=lesson&#038;p=3914"},"modified":"2024-01-09T14:56:25","modified_gmt":"2024-01-09T14:56:25","slug":"psr-b125712","status":"publish","type":"lesson","link":"https:\/\/msealey.co.uk\/K12-Journeys\/lesson\/psr-b125712\/","title":{"rendered":"PSR B1257+12"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><div class=\"class-box class-image\">\r\n\t<ul class=\"data-list\">\r\n\t\t<li>\r\n\t\t\t<a class=\"\" title=\"Journey deeper into Space\" href=\"https:\/\/msealey.co.uk\/K12-Journeys\/journeys\/journey-deeper-into-space\/\" rel=\"noopener\">\r\n\t\t\t\r\n\t\t\t\t<img decoding=\"async\" class=\"class-logo medium\" src=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/07\/Journey_deeper_into_Space-Tall.png\" alt=\"Journey deeper into Space\" title=\"Journey deeper into Space\" \/>\r\n\t\t\t\r\n\t\t\t<\/a>\r\n\t\t<\/li>\r\n\t<\/ul>\r\n<\/div>\r\n\r\n<!--<div class=\"class-box\">\r\n\t<h2 class=\"class-title\">PSR B1257+12<\/h2>\r\n<\/div>-->\r\n\r\n<h4 class=\"wp-block-heading class-header\">Key Information<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<h3 class=\"class-title\">PSR B1257+12<\/h3>\r\n\t<figure class=\"wp-block-table info-table\">\r\n\t\t<div class=\"table-wrapper\">\r\n\t\t\t<table class=\"class-table\">\r\n\t\t\t\t<tbody>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Type<\/td>\r\n\t\t\t\t\t<td>Pulsar or Neutron Star<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Diameter<\/td>\r\n\t\t\t\t\t<td>17.4 miles<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Distance<\/td>\r\n\t\t\t\t\t<td>2,300 light years<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Mass<\/td>\r\n\t\t\t\t\t<td>1.4 M\u2609<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Temperature<\/td>\r\n\t\t\t\t\t<td>51,380 \u00b0F<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Date of Discovery<\/td>\r\n\t\t\t\t\t<td>9 February, 1990<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Other Names<\/td>\r\n\t\t\t\t\t<td>Lich, PSR 1257+12, PSR J1300+1240, PSR 1300+1240<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<\/tbody>\r\n\t\t\t<\/table>\r\n\t\t<\/div>\r\n\t<\/figure>\r\n<\/div>\r\n\r\n<h4 class=\"wp-block-heading class-header\">Learning Point<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<ul>\n<li>As the <strong>first confirmed star with exoplanets<\/strong>, <strong>PSR B1257+12<\/strong> is an interesting pulsar that <strong>surprised astronomers<\/strong> who <strong>hadn&#8217;t thought it was possible<\/strong> for planets to exist around neutron stars. It was formed from the <strong>merger of two white dwarf stars<\/strong>.<\/li>\n<\/ul>\n\r\n<\/div>\r\n\r\n<h4 class=\"wp-block-heading class-header\">Project<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<ul>\n<li>Decide on better names for the star and its planets.<\/li>\n<\/ul>\n\r\n<\/div>\r\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<div class=\"wp-block-gutena-tabs gutena-tabs-block gutena-tabs-block-77de37-56 class-container class-tab\"><ul class=\"gutena-tabs-tab tab-flex\"><li class=\"gutena-tab-title active\" data-tab=\"1\"><div class=\"gutena-tab-title-content icon-top\"><div class=\"gutena-tab-title-text\"><div>Overview<\/div><\/div><\/div><\/li><li class=\"gutena-tab-title inactive\" data-tab=\"2\"><div class=\"gutena-tab-title-content icon-top\"><div class=\"gutena-tab-title-text\"><div>Planet &#8216;b&#8217;<\/div><\/div><\/div><\/li><li class=\"gutena-tab-title inactive\" data-tab=\"3\"><div class=\"gutena-tab-title-content icon-top\"><div class=\"gutena-tab-title-text\"><div>Planet &#8216;c&#8217;<\/div><\/div><\/div><\/li><li class=\"gutena-tab-title inactive\" data-tab=\"4\"><div class=\"gutena-tab-title-content icon-top\"><div class=\"gutena-tab-title-text\"><div>Planet &#8216;d&#8217;<\/div><\/div><\/div><\/li><\/ul><div class=\"gutena-tabs-content is-layout-flow wp-block-gutena-tabs-is-layout-flow\">\n<div class=\"wp-block-gutena-tab gutena-tab-block gutena-tab-block-543fc0-6f active class-box class-image\" data-tab=\"1\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712-1024x538.jpg\" alt=\"PSR B1257+12\" class=\"wp-image-5008\" srcset=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712-1024x538.jpg 1024w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712-300x158.jpg 300w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712-768x404.jpg 768w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712-1536x807.jpg 1536w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-gutena-tab gutena-tab-block gutena-tab-block-05a1ad-fd inactive class-box class-image\" data-tab=\"2\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"473\" src=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_A-1024x473.png\" alt=\"Comparison of PSR B1257+12 b\" class=\"wp-image-5011\" srcset=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_A-1024x473.png 1024w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_A-300x138.png 300w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_A-768x354.png 768w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_A.png 1040w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Exoplanet_Comparison_PSR_B1257%2B12_A.png\">Aldaron, a.k.a. Aldaron<\/a>, <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\">CC BY-SA 3.0<\/a>, via Wikimedia Commons<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-gutena-tab gutena-tab-block gutena-tab-block-82488c-0c inactive class-box class-image\" data-tab=\"3\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"473\" src=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_B-1024x473.png\" alt=\"Comparison of PSR_ B1257+12 c\" class=\"wp-image-5012\" srcset=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_B-1024x473.png 1024w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_B-300x138.png 300w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_B-768x354.png 768w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_B.png 1040w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Exoplanet_Comparison_PSR_B1257%2B12_B.png\">Aldaron, a.k.a. Aldaron<\/a>, <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\">CC BY-SA 3.0<\/a>, via Wikimedia Commons<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-gutena-tab gutena-tab-block gutena-tab-block-24bf9b-4d inactive class-box class-image\" data-tab=\"4\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"473\" src=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_C-1024x473.png\" alt=\"Comparison PSR B1257+12 d\" class=\"wp-image-5013\" srcset=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_C-1024x473.png 1024w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_C-300x138.png 300w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_C-768x354.png 768w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/Exoplanet_Comparison_PSR_B125712_C.png 1040w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Exoplanet_Comparison_PSR_B1257%2B12_C.png\">Aldaron, a.k.a. Aldaron<\/a>, <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\">CC BY-SA 3.0<\/a>, via Wikimedia Commons<\/figcaption><\/figure>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\r\n\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading class-header\">Location<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<div id='gallery-1' class='gallery galleryid-3914 gallery-columns-1 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1397\" height=\"755\" src=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712_Location.png\" class=\"attachment-full size-full\" alt=\"Location of PSR B1257+12\" srcset=\"https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712_Location.png 1397w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712_Location-300x162.png 300w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712_Location-1024x553.png 1024w, https:\/\/msealey.co.uk\/K12-Journeys\/wp-content\/uploads\/2023\/10\/PSR_B125712_Location-768x415.png 768w\" sizes=\"auto, (max-width: 1397px) 100vw, 1397px\" \/>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\r\n\r\n\t<figure class=\"wp-block-table info-table\">\r\n\t\t<div class=\"table-wrapper\">\r\n\t\t\t<table class=\"class-table\">\r\n\t\t\t\t<tbody>\r\n\t\r\n\t\t\t\t<tr>\r\n\t\t\t\t\t<td class=\"class-table-title\">Located in<\/td>\r\n\t\t\t\t\t<td>Virgo, in the Milky Way<\/td>\r\n\t\t\t\t<\/tr>\r\n\t\r\n\t\t\t\t<\/tbody>\r\n\t\t\t<\/table>\r\n\t\t<\/div>\r\n\t<\/figure>\r\n<\/div>\r\n\r\n<h4 class=\"wp-block-heading class-header\">Fun Facts<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<ul>\n<li>The star is named after <strong>Lich<\/strong>, with the planets having the names <strong>Draugr<\/strong>, <strong>Poltergeist <\/strong>and <strong>Phobetor<\/strong>.<\/li>\n<li>The <strong>planets were identified<\/strong> after it was realised the <strong>timing of the pulsar was not consistent<\/strong>, which showed something must be orbiting it.<\/li>\n<li>The planet name <strong>Draugr <\/strong>is the <strong>smallest confirmed exoplanet<\/strong> discovered, being <strong>twice the weight of the moon<\/strong>.<\/li>\n<li>It is thought to also have an <strong>asteroid belt<\/strong> or a <strong>Kuiper belt<\/strong>.<\/li>\n<\/ul>\n\r\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h4 class=\"wp-block-heading class-header\">Past Lessons<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<figure class=\"wp-block-table info-table\">\r\n\t\t<div class=\"table-wrapper\">\r\n\t\t\t<table class=\"class-list\">\r\n\t\t\t\t<tbody>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t<tr>\r\n\t\t\t\t\t\t<td class=\"icon\">74<\/td>\r\n\t\t\t\t\t\t<td class=\"class-table-title\">December 18, 2023<\/td>\r\n\t\t\t\t\t\t<td>(North America)<\/td>\r\n\t\t\t\t\t<\/tr>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t<tr class=\"hide-this-row\">\r\n\t\t\t\t\t\t<td colspan=\"3\">No Past Lessons<\/td>\r\n\t\t\t\t\t<\/tr>\r\n\t\t\t\t<\/tbody>\r\n\t\t\t<\/table>\r\n\t\t<\/div>\r\n\t<\/figure>\r\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\r\n<h4 class=\"wp-block-heading class-header\">Upcoming Lessons<\/h4>\r\n\r\n<div class=\"class-box\">\r\n\t<figure class=\"wp-block-table info-table\">\r\n\t\t<div class=\"table-wrapper\">\r\n\t\t\t<table class=\"class-list\">\r\n\t\t\t\t<tbody>\r\n\r\n\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\r\n\r\n\t\t\t\t\t<tr class=\"hide-this-row\">\r\n\t\t\t\t\t\t<td colspan=\"3\">No Upcoming Lessons<\/td>\r\n\t\t\t\t\t<\/tr>\r\n\t\t\t\t<\/tbody>\r\n\t\t\t<\/table>\r\n\t\t<\/div>\r\n\t<\/figure>\r\n<\/div>\r\n<\/div>\n<\/div>\n","protected":false},"featured_media":0,"template":"","class_list":["post-3914","lesson","type-lesson","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/msealey.co.uk\/K12-Journeys\/wp-json\/wp\/v2\/lesson\/3914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/msealey.co.uk\/K12-Journeys\/wp-json\/wp\/v2\/lesson"}],"about":[{"href":"https:\/\/msealey.co.uk\/K12-Journeys\/wp-json\/wp\/v2\/types\/lesson"}],"wp:attachment":[{"href":"https:\/\/msealey.co.uk\/K12-Journeys\/wp-json\/wp\/v2\/media?parent=3914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}