{"id":10018,"date":"2023-12-26T19:51:03","date_gmt":"2023-12-26T19:51:03","guid":{"rendered":"https:\/\/www.hipplanet.com\/hip\/uncategorized\/hip-glossary-star\/"},"modified":"2023-12-26T19:51:03","modified_gmt":"2023-12-26T19:51:03","slug":"hip-glossary-star","status":"publish","type":"post","link":"https:\/\/www.hipplanet.com\/hip\/hip-glossary\/hip-glossary-star\/","title":{"rendered":"Hip Glossary: Star"},"content":{"rendered":"<p>Star:<\/p>\n<div>Star &#8211; in old russian language 100 sun (sta Ra) A <strong>star<\/strong> is a massive, compact body of plasma in outer space that is held together by its own gravity and is sufficiently massive to sustain nuclear fusion in a very dense, hot core region. This fusion of atomic nuclei generates the energy that is continuously radiated from the outer layers of the star during much of its life span.<\/div>\n<p><\/p>\n<div>Astronomers can determine many of the properties of a star by observing its spectrum, luminosity and motion through space. Individual stars differ in their total mass, chemical composition, and age. The total mass of a star is the principal determinant in its evolution and eventual fate. Other characteristics of a star that are determined by its evolutionary history include the diameter, rotation, movement and temperature. A plot of the star&#8217;s temperature against luminosity, known as a Hertzsprung-Russell diagram (HR-diagram), allows the current age and evolutionary state of the star to be determined.<\/div>\n<p><\/p>\n<div>A star begins as a collapsing cloud of material that is primarily composed of hydrogen, with some helium and heavier trace elements. Once the stellar core is sufficiently dense, a portion of the hydrogen is then steadily converted into helium through the process of nuclear fusion. The remainder of the star&#8217;s interior carries energy away from the core through a combination of radiation and convective processes. At the surface this energy generates a stellar wind and is radiated out into space.<\/div>\n<p><\/p>\n<div>Once the hydrogen fuel at the core is exhausted, a star of at least 0.4 times the mass of the Sun<sup> <\/sup>expands to become a red giant, fusing heavier elements at the core, or in shells around the core. It then evolves into a degenerate form, recycling a portion of the matter into the interstellar environment where it will form a new generation of stars with a higher proportion of heavy elements.<\/div>\n<p><\/p>\n<div>Binary and multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution.<\/div>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Star: Star &#8211; in old russian language 100 sun (sta Ra) A star is a massive, compact body of plasma in outer space that is held together by its own gravity and is sufficiently massive to sustain nuclear fusion in a very dense, hot core region. This fusion of atomic nuclei generates the energy that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[146],"tags":[],"class_list":["post-10018","post","type-post","status-publish","format-standard","hentry","category-hip-glossary"],"_links":{"self":[{"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/posts\/10018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/comments?post=10018"}],"version-history":[{"count":0,"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/posts\/10018\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/media?parent=10018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/categories?post=10018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hipplanet.com\/hip\/wp-json\/wp\/v2\/tags?post=10018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}