{"id":520344,"date":"2018-09-06T05:52:00","date_gmt":"2018-09-06T09:52:00","guid":{"rendered":"https:\/\/spaceweekly.com\/?guid=9735b06090f75b1d5cc44242a6b2c7e6"},"modified":"2018-09-06T05:52:00","modified_gmt":"2018-09-06T09:52:00","slug":"atmospheric-tricks-hide-suns-power-2","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=520344","title":{"rendered":"Atmospheric tricks hide Sun\u2019s power"},"content":{"rendered":"

\t\t\t\t\t<\/p>\n

\nThis panorama comprises five images showing the Sun setting over the medieval and Renaissance town of Montepulciano, southern Tuscany.\n<\/p>\n

\nWhile the enormous ball of hot gas that is our star cannot be directly seen, its presence is suggested by the radiant streams of light emanating from below the horizon \u2014 called anticrepuscular rays, or antisolar rays.\n<\/p>\n

\nDespite appearing to meet at a point just below the horizon, the rays are in fact near-parallel beams of sunlight. Similar to the way that parallel railway lines seem to converge at a point in the distance, this is a trick of perspective; while these rays of sunlight do eventually meet at the Sun, it is a great deal further away than they make it appear.\n<\/p>\n

\nEarth\u2019s atmosphere, made up of gases, particulates and clouds, has shaped the way humans have seen the Sun for as long as they have been able to perceive it, for example making the white-hot star appear yellow against a blue sky, masking the infinite blackness of space.\n<\/p>\n

\nHowever, as soon as we get past this protective layer, the true effect of our raging Sun becomes apparent in the fast changing, and potentially harmful environment of space, where space weather rules.\n<\/p>\n

\nSpace weather refers to the environmental conditions in space as influenced by solar activity; besides emitting a continuous stream of electrically charged atomic particles, the Sun periodically emits billions of tonnes of material threaded with magnetic fields in colossal-scale \u2018coronal mass ejections\u2019.\n<\/p>\n

\nThese \u2018solar sneezes\u2019 can and have caused significant disruption to Earth\u2019s protective magnetic bubble and upper atmosphere, affecting satellites in orbit, navigation systems, terrestrial power grids, and data and communication networks. A recent ESA study<\/a> estimated the potential impact in Europe from a single, extreme space weather event could be about \u20ac15 billion.\n<\/p>\n

\nFor this reason, ESA is planning a new mission<\/a> to monitor the Sun\u2019s activity and provide early warnings. The spacecraft will be positioned between the Sun and Earth at a special position called the fifth Lagrange point<\/a>. From here, it can observe the \u2018side\u2019 of our star, detecting rapidly changing solar activity before it reaches Earth, providing much-needed warning of extreme weather events, allowing measures to be taken to protect and minimise any possible damage to satellites in orbit or infrastructure on Earth.\n<\/p>\n

\nMore images by UK-based photographer Ollie Taylor can be found on his website<\/a>, or via Instagram<\/a> and Facebook<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

<\/p>\n

\nThis panorama comprises five images showing the Sun setting over the medieval and Renaissance town of Montepulciano, southern Tuscany.\n<\/p>\n

\nWhile the enormous ball of hot gas that is our star cannot be directly seen, its presence is suggested by the radiant streams of light emanating from below the horizon — called anticrepuscular rays, or antisolar rays.\n<\/p>\n

\nDespite appearing to meet at a point just below the horizon, the rays are in fact near-parallel beams of sunlight. Similar to the way that parallel railway lines seem to converge at a point in the distance, this is a trick of perspective; while these rays of sunlight do eventually meet at the Sun, it is a great deal further away than they make it appear.\n<\/p>\n

\nEarth’s atmosphere, made up of gases, particulates and clouds, has shaped the way humans have seen the Sun for as long as they have been able to perceive it, for example making the white-hot star appear yellow against a blue sky, masking the infinite blackness of space.\n<\/p>\n

\nHowever, as soon as we get past this protective layer, the true effect of our raging Sun becomes apparent in the fast changing, and potentially harmful environment of space, where space weather rules.\n<\/p>\n

\nSpace weather refers to the environmental conditions in space as influenced by solar activity; besides emitting a continuous stream of electrically charged atomic particles, the Sun periodically emits billions of tonnes of material threaded with magnetic fields in colossal-scale ‘coronal mass ejections’.\n<\/p>\n

\nThese ‘solar sneezes’ can and have caused significant disruption to Earth’s protective magnetic bubble and upper atmosphere, affecting satellites in orbit, navigation systems, terrestrial power grids, and data and communication networks. A recent ESA study<\/a> estimated the potential impact in Europe from a single, extreme space weather event could be about €15 billion.\n<\/p>\n

\nFor this reason, ESA is planning a new mission<\/a> to monitor the Sun’s activity and provide early warnings. The spacecraft will be positioned between the Sun and Earth at a special position called the fifth Lagrange point<\/a>. From here, it can observe the ‘side’ of our star, detecting rapidly changing solar activity before it reaches Earth, providing much-needed warning of extreme weather events, allowing measures to be taken to protect and minimise any possible damage to satellites in orbit or infrastructure on Earth.\n<\/p>\n

\nMore images by UK-based photographer Ollie Taylor can be found on his website<\/a>, or via Instagram<\/a> and Facebook<\/a>.<\/p>\n","protected":false},"author":5,"featured_media":615444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-520344","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-multimedia"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/520344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=520344"}],"version-history":[{"count":1,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/520344\/revisions"}],"predecessor-version":[{"id":520345,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/520344\/revisions\/520345"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/615444"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=520344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=520344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=520344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}