{"id":202447,"date":"2022-08-29T18:33:02","date_gmt":"2022-08-29T13:03:02","guid":{"rendered":"https:\/\/blog.forumias.com\/?p=202447"},"modified":"2022-08-29T18:33:02","modified_gmt":"2022-08-29T13:03:02","slug":"james-webb-telescope-light-on-dark-matter","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/james-webb-telescope-light-on-dark-matter\/","title":{"rendered":"James Webb telescope: Light on dark matter"},"content":{"rendered":"\n

Source<\/b>: The post is based on an article \u201cJames Webb telescope: Light on dark matter<\/strong>\u201d published in the Indian Express<\/strong> on 29th<\/sup>\u00a0August 2022<\/strong>.<\/p>\n

Syllabus<\/b>: GS 3: Awareness in the fields of Space.<\/b><\/p>\n

Relevance:<\/b> Space Exploration of James Webb Space Telescope(JWST)<\/p>\n

News:<\/b> In 2021, the James Webb Space Telescope was commissioned into space to probe the universe. It has replaced the Hubble Space Telescope.<\/p>\n

About the James Webb Space Telescope<\/b><\/h5>\n\n\n\n
Read here: James Webb Space Telescope (JWST)<\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
What are the previous findings on space science?<\/b><\/h5>\n

In 1543, the Polish astronomer Nicolaus Copernicus professed that the Earth is not at the centre of the universe. Earth is just another planet revolving around the Sun. Although, at present, the broad contours of the universe are fairly well established, but details are still missing:<\/p>\n

(a) At the \u201cbeginning\u201d of time, all the energy was concentrated in a\u00a0primeval fireball<\/b>\u00a0of extremely high temperature and density.<\/p>\n

(b) Thereafter, the universe started expanding, due to a massive explosion, which is termed the Big Bang<\/b>\u00a0about 14 billion years ago.<\/p>\n

(3) In the last few decades, it has been established that most of the universe is a combination of a mysterious\u00a0kind of matter<\/b>\u00a0called\u00a0dark matter<\/b> and an even more\u00a0mysterious unknown<\/b>\u00a0substance<\/b>\u00a0called\u00a0dark energy.<\/b><\/p>\n

What is the importance of the James Webb Space Telescope (JWST)?<\/b><\/h5>\n

It provides a unique opportunity to fill the gaps in knowledge with the help of understanding the\u00a0electromagnetic radiation<\/b>\u00a0waves<\/b>, emitted from cosmic objects.<\/p>\n

Due to the expansion of the universe, electromagnetic radiation\u00a0waves are stretched. In other words, visible light could be stretched into the longer\u00a0infrared part<\/b>\u00a0of the spectrum. The JWST will study this Infrared radiation. Further, these radiations have the advantage of passing through dust clouds more easily than visible light.<\/p>\n

The JWST will give an insight into how the first stars and galaxies formed from the primaeval soup of matter and radiation.<\/p>\n

It will also allow us to compare the earliest galaxies (those that are furthest) to those that we observe today in our own cosmic neighbourhood.<\/p>\n

Since it operates in the infrared, it can see through the dust clouds that obscure regions where star and planet formation is taking place.<\/p>\n

The Webb produces a huge amount of\u00a0spectroscopic data\u00a0<\/b>which can help reveal the chemical composition of the region producing the radiation. Studying the chemical composition of exo-planets would also determine whether life as we know it is possible in these extra-terrestrial worlds.<\/p>\n

What are some important JWST observations made so far?<\/b><\/h5>\n

In July, the JWST released its first images of galaxies that might date back to almost 13 billion years ago. For Example, the cosmic cliffs of the Carina nebula, the Cartwheel galaxy, and Stephan\u2019s quintet.<\/p>\n

It has also provided an analysis of the atmosphere and indicated the presence of water in a giant gas planet orbiting a star about a thousand light years away.<\/p>\n\n\n\n
Read more: What is the relevance of the recently released images from the James Webb Space Telescope?<\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Over its lifetime, the JWST would provide us with a powerful window to help us understand the cosmos better and comprehensively.<\/p>\n","protected":false},"excerpt":{"rendered":"

Source: The post is based on an article \u201cJames Webb telescope: Light on dark matter\u201d published in the Indian Express on 29th\u00a0August 2022. Syllabus: GS 3: Awareness in the fields of Space. Relevance: Space Exploration of James Webb Space Telescope(JWST) News: In 2021, the James Webb Space Telescope was commissioned into space to probe the… Continue reading James Webb telescope: Light on dark matter<\/span><\/a><\/p>\n","protected":false},"author":10343,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1230,9],"tags":[216,10500],"class_list":["post-202447","post","type-post","status-publish","format-standard","hentry","category-9-pm-daily-articles","category-public","tag-gs-paper-3","tag-indian-express","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/202447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10343"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=202447"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/202447\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=202447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=202447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=202447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}