{"id":3842,"date":"2009-07-25T07:12:45","date_gmt":"2009-07-25T09:12:42","guid":{"rendered":""},"modified":"2011-07-08T22:11:38","modified_gmt":"2011-07-08T16:11:38","slug":"very-short-history-of-the-plan","status":"publish","type":"post","link":"https:\/\/kk.org\/ct2\/very-short-history-of-the-plan\/","title":{"rendered":"Very Short History of the Planet Earth"},"content":{"rendered":"<p>\nJohn Baez has written a <a href=\"http:\/\/math.ucr.edu\/home\/baez\/earth.html\">Very Short History of the Planet Earth<\/a>. He says, &#8220;The Earth has survived some remarkable disasters. To keep our tale brief, let us focus on four: the Big Splat about 4.55 billion years ago, the Late Heavy Bombardment about 4 billion years ago, the Oxygen Catastrophe roughly 2.5 billion years ago, and the Snowball Earth events about 850 million years ago. The details of these events &#8212; and indeed, whether they even happened at all &#8212; remain controversial. We shall present some widely accepted theories without dwelling on caveats or alternative scenarios. In every case, there is interesting physics involved in testing these theories.&#8221;\n<\/p>\n<p>\nIt&#8217;s not the whole history, but select dramatic parts, told simply and quick. It includes many scenes I was not aware of.\n<\/p>\n<p>\n<img loading=\"lazy\" src=\"https:\/\/kk.org\/ct2\/TTauriStarDrawing.jpg\" height=\"338\" width=\"450\" border=\"0\" align=\"middle\" hspace=\"4\" vspace=\"4\" alt=\"Ttauristardrawing\" \/><br \/>\n<br \/><em>The dust cloud that is the precursor to Earth.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>John Baez has written a Very Short History of the Planet Earth. He says, &#8220;The Earth has survived some remarkable disasters. To keep our tale brief, let us focus on four: the Big Splat about 4.55 billion years ago, the &hellip; <a href=\"https:\/\/kk.org\/ct2\/very-short-history-of-the-plan\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"0","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/posts\/3842"}],"collection":[{"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/comments?post=3842"}],"version-history":[{"count":0,"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/posts\/3842\/revisions"}],"wp:attachment":[{"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/media?parent=3842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/categories?post=3842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kk.org\/ct2\/wp-json\/wp\/v2\/tags?post=3842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}