{"id":7247,"date":"2016-02-18T13:36:07","date_gmt":"2016-02-18T20:36:07","guid":{"rendered":"http:\/\/BigJimIndustries.com\/wordpress\/?p=7247"},"modified":"2016-03-06T13:43:40","modified_gmt":"2016-03-06T20:43:40","slug":"thank-you-sun-for-protecting-us-from-the-evil-space-rocks","status":"publish","type":"post","link":"https:\/\/bigjimindustries.com\/wordpress\/2016\/02\/18\/thank-you-sun-for-protecting-us-from-the-evil-space-rocks\/","title":{"rendered":"Thank you, Sun, for protecting us from the evil space-rocks."},"content":{"rendered":"<p><em><a href=\"http:\/\/time.com\/4229095\/sun-asteroids-protection-earth\/\" target=\"_blank\">from TIME<\/a><\/em><\/p>\n<h1>How the Sun Protects Earth From Getting Clobbered By an Asteroid<\/h1>\n<p>by\u00a0<a href=\"http:\/\/time.com\/author\/jeffrey-kluger\/\" target=\"_blank\">Jeffrey Kluger<\/a> <a class=\"author-twitter\" href=\"https:\/\/twitter.com\/jeffreykluger\" target=\"_blank\">@jeffreykluger<\/a><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/timedotcom.files.wordpress.com\/2016\/02\/meteor.jpg\" alt=\"Duck: The Chelyabinsk meteor lights up the Russian sky, in 2013\" width=\"480\" \/><em>Marat Ahmetvaleev \/ Duck: The Chelyabinsk meteor lights up the Russian sky, in 2013<\/em><\/p>\n<h2>A trick of heat and light makes space rocks self-destruct<\/h2>\n<p>The Earth grew up in an awfully rough neighborhood and it\u2019s always needed the help of powerful friends. This was specially true in the early days of the solar system, during the so-called heavy bombardment phase, when asteroids and comets turned the region near the sun into something of a free-fire zone.<\/p>\n<p>One of the things that prevented us from getting blown to smithereens was the fortuitous location of Jupiter which, with its powerful gravity, intercepts some of the incoming ordnance before it can reach us. That still leaves a lot of debris on the loose\u2014witness the 66-ft (20 m) meteor that <a href=\"http:\/\/science.time.com\/2013\/06\/26\/meteor-strike-investigating-a-cosmic-crime-scene\/\" target=\"_blank\">exploded in the skies over Chelyabinsk, Russia in 2013<\/a>. All the same, according to a new study in <a href=\"http:\/\/www.nature.com\/nature\/journal\/v530\/n7590\/full\/nature16934.html\" target=\"_blank\">Nature<\/a>, it appears that we\u2019re more protected than we knew\u2014thanks to the powers of the sun.<\/p>\n<p>Astronomers around the world keep a close watch on what they call near-Earth objects (NEOs)\u2014asteroids that orbit through the solar system within 121 million miles (224 million km) of the sun, which brings them dangerously close to the Earth\u2019s own 93 million mile (172 million km) orbit. Much of that census-taking is done by the <a href=\"http:\/\/www.lpl.arizona.edu\/css\/index.html\" target=\"_blank\">Catalina Sky Survey<\/a>, a program conducted principally by NASA\u2019s Jet Propulsion Laboratory and the University of Arizona.<\/p>\n<p>Recently, a team of investigators led by research scientist Mikael Granvik of the University of Helsinki began looking at the population of known NEOs and noticed something strange: While the mix of dark asteroids and brighter, more reflective ones is more or less even throughout the solar system, in the vicinity of the sun, many of the dark ones go missing. What\u2019s more, in this case, the solar \u201cvicinity\u201d can be pretty huge. Smaller bodies often get torn apart gravitationally as they approach what\u2019s known as the Roche limit of a larger body like the sun or a planet\u2014a distance of about 2.5 times the radius of that body. But the dark asteroids start falling apart at about ten times the solar radius, or about 4.3 million miles from the sun.<\/p>\n<p>[ <a href=\"http:\/\/time.com\/4229095\/sun-asteroids-protection-earth\/\" target=\"_blank\">click to continue reading at TIME<\/a> ]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>from TIME How the Sun Protects Earth From Getting Clobbered By an Asteroid by\u00a0Jeffrey Kluger @jeffreykluger Marat Ahmetvaleev \/ Duck: The Chelyabinsk meteor lights up the Russian sky, in 2013 A trick of heat and light makes space rocks self-destruct The Earth grew up in an awfully rough neighborhood and it\u2019s always needed the help [&hellip;]<\/p>\n","protected":false},"author":26,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[8],"tags":[],"class_list":["post-7247","post","type-post","status-publish","format-standard","hentry","category-weirdness"],"_links":{"self":[{"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/posts\/7247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/comments?post=7247"}],"version-history":[{"count":0,"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/posts\/7247\/revisions"}],"wp:attachment":[{"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/media?parent=7247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/categories?post=7247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bigjimindustries.com\/wordpress\/wp-json\/wp\/v2\/tags?post=7247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}