{"id":76,"date":"2014-11-11T10:14:27","date_gmt":"2014-11-11T10:14:27","guid":{"rendered":"http:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/?page_id=76"},"modified":"2014-11-11T10:14:32","modified_gmt":"2014-11-11T10:14:32","slug":"cosmology-summar-s3","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/cosmology-summar-s3\/","title":{"rendered":"Cosmology Summary (S3)"},"content":{"rendered":"<p style=\"text-align: left\"><a href=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Definitions.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-54\" title=\"Definitions\" src=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Definitions.png\" alt=\"\" width=\"634\" height=\"284\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Definitions.png 905w, https:\/\/glow-prod-gc.s3.eu-west-1.amazonaws.com\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Definitions-300x134.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEM7%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJIMEYCIQCD75eOoZHTcQyB57B8xXs1xTjilOZZ5iodk8oApl6EhAIhAKQmDjy96RVvDlbZVnKGfQ6D22P4hKj4nllQ%2BL%2BvMokgKsIFCJf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQBRoMMjczNTcwMTk1NDMzIgye9JmdqKot9ge%2BrmAqlgV199GJplgs%2FVCV72nT85A3fU7ShAvZu%2B0c%2FFx%2Fo86fAo%2FyYxcBzgku4e9e2ebTccZH%2Fbb5fBey8PmQPmFfy442bjYevwIHKY4d8pNg1uxpK7mjBOi6WPyPdxuDGDpF5u8lMopc66ZIssVbvYjIMJ9Eozh%2FnwT7o3vtQc8O%2F7sgxrWaxlzsfXr8%2F3wl52GKW73MS2QfbH%2Fzy63j4RV%2FIF6fSZEj%2BUZLwL8A0WjmHRJKmMkcsyptm%2BlrMiQyEYczxqyaTrOwl5b3tL37BcojI6Jh%2F%2FbGaKCddT7OUFgvto1IujVFfEaNPEC7owyKQVPSlG%2BVSIlIZglOHihQzXufKB%2BnU3b%2B5RisilEy7bkm74soqGKplalrLrE9d5sJKk4Wr0v9jAKzxbsji2lBN3IwHP8NoYTX9ZFnAtHd0E8NNAzPQedU50gj0YFuOAMUm014Tbr0ePwhbXC8pxX8C%2FgIJG0e95L%2FBSOXNjDj2n1ttsQ1uQn0Pk3ihHMVFYMGr9bcfksL3gUU7OCioXZISPn08pFN2FI2CyB6Seu7yUaWzsrd8s8HDYO%2BFWCXMj0DGqxmy1Z0jU4fWmWlP6IRb948IMvFgjTziXp27FQNt9KHUY2XFla7vXmyI4KfYAVfVEnjX3AeYaAlfM8zpFhjxdIVSA3TjuGEf8i%2Fb%2FIfmO99HHh8eNHBYwXkfrkINyz%2F8MO0pF0w%2FJgELImtthxXxWbpAeESMF0zhtiggJLhbcc2gIUJeVZxNkE00hawfRifd2iA6vZEcXgKhHg%2BfAucwhabWispVWiPqjNBr3%2BlmoIARi%2FGxMPIFXAq3ds4jVw7yfDTOZJ%2FVkzrsCgd7JG%2FOBjKtPs63gero3lwtca%2FgeJmj1WcGnS6%2FdRjFDDp0sLOBjqwAXiljKfyc8RWwJdEcEIcEE8LIEHV4GNpVT%2FKUOiAHc8C8TRr3I1vNYPMJtv5mhFqrIpkWc%2BrPZBX00CguuhDSJ1yXzB1FittfN6RwmwNOHTAwEaYyysIF7ClE21PsdbxNDnRnCVHP%2B78cJxgb8dIk3vElzo%2F6U%2FIOEu8BdaDHIwLA2npvGeJoGuxIiK16Rlw9hZPAyQEDG3CF6gJIfbzVN9UtwjFD1gnMDMYBitPqYuV&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UTNCFT3IY%2F20260404%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260404T061536Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=989459e4d8afe7dd8710c3cfe13cb8ba174c2325adb0900226e5b633d705b4ef 300w\" sizes=\"auto, (max-width: 634px) 85vw, 634px\" \/><\/a><\/p>\n<h1>Light year <\/h1>\n<p>This is the <strong>distance<\/strong> that light can travel in one year.  We use light years to describe distances in space physics because otherwise the numbers would be ridiculously large.<\/p>\n<p style=\"text-align: center\"><a href=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-61\" title=\"Picture3\" src=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture3.png\" alt=\"\" width=\"597\" height=\"155\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture3.png 995w, https:\/\/glow-prod-gc.s3.eu-west-1.amazonaws.com\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture3-300x78.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEM7%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJIMEYCIQCD75eOoZHTcQyB57B8xXs1xTjilOZZ5iodk8oApl6EhAIhAKQmDjy96RVvDlbZVnKGfQ6D22P4hKj4nllQ%2BL%2BvMokgKsIFCJf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQBRoMMjczNTcwMTk1NDMzIgye9JmdqKot9ge%2BrmAqlgV199GJplgs%2FVCV72nT85A3fU7ShAvZu%2B0c%2FFx%2Fo86fAo%2FyYxcBzgku4e9e2ebTccZH%2Fbb5fBey8PmQPmFfy442bjYevwIHKY4d8pNg1uxpK7mjBOi6WPyPdxuDGDpF5u8lMopc66ZIssVbvYjIMJ9Eozh%2FnwT7o3vtQc8O%2F7sgxrWaxlzsfXr8%2F3wl52GKW73MS2QfbH%2Fzy63j4RV%2FIF6fSZEj%2BUZLwL8A0WjmHRJKmMkcsyptm%2BlrMiQyEYczxqyaTrOwl5b3tL37BcojI6Jh%2F%2FbGaKCddT7OUFgvto1IujVFfEaNPEC7owyKQVPSlG%2BVSIlIZglOHihQzXufKB%2BnU3b%2B5RisilEy7bkm74soqGKplalrLrE9d5sJKk4Wr0v9jAKzxbsji2lBN3IwHP8NoYTX9ZFnAtHd0E8NNAzPQedU50gj0YFuOAMUm014Tbr0ePwhbXC8pxX8C%2FgIJG0e95L%2FBSOXNjDj2n1ttsQ1uQn0Pk3ihHMVFYMGr9bcfksL3gUU7OCioXZISPn08pFN2FI2CyB6Seu7yUaWzsrd8s8HDYO%2BFWCXMj0DGqxmy1Z0jU4fWmWlP6IRb948IMvFgjTziXp27FQNt9KHUY2XFla7vXmyI4KfYAVfVEnjX3AeYaAlfM8zpFhjxdIVSA3TjuGEf8i%2Fb%2FIfmO99HHh8eNHBYwXkfrkINyz%2F8MO0pF0w%2FJgELImtthxXxWbpAeESMF0zhtiggJLhbcc2gIUJeVZxNkE00hawfRifd2iA6vZEcXgKhHg%2BfAucwhabWispVWiPqjNBr3%2BlmoIARi%2FGxMPIFXAq3ds4jVw7yfDTOZJ%2FVkzrsCgd7JG%2FOBjKtPs63gero3lwtca%2FgeJmj1WcGnS6%2FdRjFDDp0sLOBjqwAXiljKfyc8RWwJdEcEIcEE8LIEHV4GNpVT%2FKUOiAHc8C8TRr3I1vNYPMJtv5mhFqrIpkWc%2BrPZBX00CguuhDSJ1yXzB1FittfN6RwmwNOHTAwEaYyysIF7ClE21PsdbxNDnRnCVHP%2B78cJxgb8dIk3vElzo%2F6U%2FIOEu8BdaDHIwLA2npvGeJoGuxIiK16Rlw9hZPAyQEDG3CF6gJIfbzVN9UtwjFD1gnMDMYBitPqYuV&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UTNCFT3IY%2F20260404%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260404T061536Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=593a2423ead5d6a5936d912c2459b3f43657d41abcd7ce52a4530b3fa69dc922 300w\" sizes=\"auto, (max-width: 597px) 85vw, 597px\" \/><\/a><\/p>\n<p>The following table give some information about the time taken for light to cover different distances (interest only \u2013 no need to learn values)<\/p>\n<p style=\"text-align: center\"><a href=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture4.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-62\" title=\"Picture4\" src=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture4.png\" alt=\"\" width=\"383\" height=\"120\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture4.png 639w, https:\/\/glow-prod-gc.s3.eu-west-1.amazonaws.com\/gc\/public\/hyndsecphysn5u1\/uploads\/sites\/5146\/2014\/11\/Picture4-300x93.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEM7%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJIMEYCIQCD75eOoZHTcQyB57B8xXs1xTjilOZZ5iodk8oApl6EhAIhAKQmDjy96RVvDlbZVnKGfQ6D22P4hKj4nllQ%2BL%2BvMokgKsIFCJf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQBRoMMjczNTcwMTk1NDMzIgye9JmdqKot9ge%2BrmAqlgV199GJplgs%2FVCV72nT85A3fU7ShAvZu%2B0c%2FFx%2Fo86fAo%2FyYxcBzgku4e9e2ebTccZH%2Fbb5fBey8PmQPmFfy442bjYevwIHKY4d8pNg1uxpK7mjBOi6WPyPdxuDGDpF5u8lMopc66ZIssVbvYjIMJ9Eozh%2FnwT7o3vtQc8O%2F7sgxrWaxlzsfXr8%2F3wl52GKW73MS2QfbH%2Fzy63j4RV%2FIF6fSZEj%2BUZLwL8A0WjmHRJKmMkcsyptm%2BlrMiQyEYczxqyaTrOwl5b3tL37BcojI6Jh%2F%2FbGaKCddT7OUFgvto1IujVFfEaNPEC7owyKQVPSlG%2BVSIlIZglOHihQzXufKB%2BnU3b%2B5RisilEy7bkm74soqGKplalrLrE9d5sJKk4Wr0v9jAKzxbsji2lBN3IwHP8NoYTX9ZFnAtHd0E8NNAzPQedU50gj0YFuOAMUm014Tbr0ePwhbXC8pxX8C%2FgIJG0e95L%2FBSOXNjDj2n1ttsQ1uQn0Pk3ihHMVFYMGr9bcfksL3gUU7OCioXZISPn08pFN2FI2CyB6Seu7yUaWzsrd8s8HDYO%2BFWCXMj0DGqxmy1Z0jU4fWmWlP6IRb948IMvFgjTziXp27FQNt9KHUY2XFla7vXmyI4KfYAVfVEnjX3AeYaAlfM8zpFhjxdIVSA3TjuGEf8i%2Fb%2FIfmO99HHh8eNHBYwXkfrkINyz%2F8MO0pF0w%2FJgELImtthxXxWbpAeESMF0zhtiggJLhbcc2gIUJeVZxNkE00hawfRifd2iA6vZEcXgKhHg%2BfAucwhabWispVWiPqjNBr3%2BlmoIARi%2FGxMPIFXAq3ds4jVw7yfDTOZJ%2FVkzrsCgd7JG%2FOBjKtPs63gero3lwtca%2FgeJmj1WcGnS6%2FdRjFDDp0sLOBjqwAXiljKfyc8RWwJdEcEIcEE8LIEHV4GNpVT%2FKUOiAHc8C8TRr3I1vNYPMJtv5mhFqrIpkWc%2BrPZBX00CguuhDSJ1yXzB1FittfN6RwmwNOHTAwEaYyysIF7ClE21PsdbxNDnRnCVHP%2B78cJxgb8dIk3vElzo%2F6U%2FIOEu8BdaDHIwLA2npvGeJoGuxIiK16Rlw9hZPAyQEDG3CF6gJIfbzVN9UtwjFD1gnMDMYBitPqYuV&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UTNCFT3IY%2F20260404%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260404T061536Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=6d21bbe9fee43dfadfefb0ac1107fa44065b816174dae25edb9611152209eecc 300w\" sizes=\"auto, (max-width: 383px) 85vw, 383px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Light year This is the distance that light can travel in one year. We use light years to describe distances in space physics because otherwise the numbers would be ridiculously large. The following table give some information about the time taken for light to cover different distances (interest only \u2013 no need to learn values)<\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-76","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages\/76","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/comments?post=76"}],"version-history":[{"count":2,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages\/76\/revisions"}],"predecessor-version":[{"id":78,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/pages\/76\/revisions\/78"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphysn5u1\/wp-json\/wp\/v2\/media?parent=76"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}