{"id":1729,"date":"2008-09-24T00:20:00","date_gmt":"2008-09-23T17:20:00","guid":{"rendered":"https:\/\/kyweathercenter.com\/?p=1729"},"modified":"2008-09-24T00:20:00","modified_gmt":"2008-09-23T17:20:00","slug":"sun-of-a","status":"publish","type":"post","link":"https:\/\/kyweathercenter.com\/?p=1729","title":{"rendered":"Sun of a&#8230;"},"content":{"rendered":"<p><P>I promised some information about the NASA news conference about our quiet sun. I sat in on the teleconference that was open to the media but there was little news for us weather fans. As a matter of fact&#8230; the NASA folks really did not want to answer any questions from the media on what imact this may have on our climate.<BR><BR>Here is the an article explaing everything they discussed&#8230;<BR><BR><STRONG>LOS ANGELES (Reuters) &#8211; The sun&#8217;s winds are less blustery than they used to be, <SPAN class=yshortcuts id=lw_1222210345_0 style=\"CURSOR: hand; BORDER-BOTTOM: #0066cc 1px dashed\">NASA<\/SPAN> said on Tuesday, revealing data from a <SPAN class=yshortcuts id=lw_1222210345_1 style=\"CURSOR: hand; BORDER-BOTTOM: #0066cc 1px dashed\">solar probe<\/SPAN> that promises new insights about Earth&#8217;s local star but poses few if any consequences for humans &#8212; unless you&#8217;re an astronaut. <\/STRONG><\/P><br \/>\n<P><STRONG>The data show the <SPAN class=yshortcuts id=lw_1222210345_2 style=\"CURSOR: hand; BORDER-BOTTOM: #0066cc 1px dashed\">solar wind<\/SPAN>, a steady stream of charged sub-atomic particles emitted by the sun and blowing at 1 million mph (1.6 million kph), has dwindled to its lowest level in at least 50 years, reducing its strength as a shield against potentially harmful galactic cosmic radiation.<\/STRONG><\/P><br \/>\n<P><STRONG>The solar wind inflates a massive protective bubble, called the heliosphere, around the solar system. But measurements from the spacecraft Ulysses show the wind&#8217;s pressure has dropped 20 percent since the mid-1990s. At the same time, the <SPAN class=yshortcuts id=lw_1222210345_3 style=\"BACKGROUND: none transparent scroll repeat 0% 0%; CURSOR: hand; BORDER-BOTTOM: medium none\">electron temperature<\/SPAN> of the solar wind has declined 13 percent.<\/STRONG><\/P><br \/>\n<P><STRONG>As the solar wind weakens, the heliosphere is expected to dwindle in size and strength as well, allowing more cosmic radiation &#8212; super high-energy electrons and protons zipping through <SPAN class=yshortcuts id=lw_1222210345_4 style=\"BACKGROUND: none transparent scroll repeat 0% 0%; CURSOR: hand; BORDER-BOTTOM: medium none\">interstellar space<\/SPAN> &#8212; to reach the <SPAN class=yshortcuts id=lw_1222210345_5>inner solar system<\/SPAN>.<\/STRONG><\/P><br \/>\n<P><STRONG>Scientists studying the phenomenon insist Earth&#8217;s inhabitants have nothing to fear. Humans remain protected from <SPAN class=yshortcuts id=lw_1222210345_6>cosmic rays<\/SPAN> by virtue of the magnetic field that surrounds Earth, acting as an inner barrier to our exposure.<\/STRONG><\/P><br \/>\n<P><STRONG>A diminished solar wind and corresponding rise in cosmic rays are of concern, however, to astronauts who venture beyond Earth orbit to the moon, Mars or beyond, and to engineers who design trans-orbital spacecraft.<\/STRONG><\/P><br \/>\n<P><STRONG>The biggest implications, however, are scientific ones.<\/STRONG><\/P><br \/>\n<P><STRONG>Researchers say the findings open the door to a greater understanding of the sun and heliosphere by altering solar conditions in a way that allows scientists to conduct new comparative studies.<\/STRONG><\/P><br \/>\n<P><STRONG>&#8220;The heliosphere is our laboratory,&#8221; said Nancy Crooker, a research professor at Boston University, in a conference call with reporters. &#8220;We know the sun has been this cool, this inactive before, but that was prior to the space age. So we didn&#8217;t have actual physical measurements until now of such periods.&#8221;<\/STRONG><\/P><br \/>\n<P><STRONG>Ed Smith, NASA&#8217;s project scientist for Ulysses, said, &#8220;It&#8217;s an opportunity for us to study changes in the sun which will give us newer insights into the origin of the solar wind and its relation to the <SPAN class=yshortcuts id=lw_1222210345_7>solar magnetic field<\/SPAN>.&#8221;<\/STRONG><\/P><br \/>\n<P><STRONG>The weakening solar wind differs from the 11-year cycles of solar activity associated with such phenomena as sun spots and <SPAN class=yshortcuts id=lw_1222210345_8>solar flares<\/SPAN> that can cause disruptions of <SPAN class=yshortcuts id=lw_1222210345_9>electric power grids<\/SPAN> and radio transmissions on Earth, as well as auroral displays.<\/STRONG><\/P><br \/>\n<P><STRONG>However, Dave McComas, a principal Ulysses investigator from the <SPAN class=yshortcuts id=lw_1222210345_10>Southwest Research Institute<\/SPAN> in San Antonio, Texas, said continued diminishment of <SPAN class=yshortcuts id=lw_1222210345_11>solar winds<\/SPAN> could dampen the impact of the next peak in other solar disturbances.<\/STRONG><\/P><br \/>\n<P><STRONG>Ulysses, a joint project of <SPAN class=yshortcuts id=lw_1222210345_12>NASA<\/SPAN> and the <SPAN class=yshortcuts id=lw_1222210345_13 style=\"CURSOR: hand; BORDER-BOTTOM: #0066cc 1px dashed\">European Space Agency<\/SPAN>, was launched from the <SPAN class=yshortcuts id=lw_1222210345_14>space shuttle Discovery<\/SPAN> in 1990 and became the first probe to fly around the sun&#8217;s poles.<\/STRONG><\/P><br \/>\n<P><STRONG>After more than 17 years, the spacecraft named for the hero of &#8220;<SPAN class=yshortcuts id=lw_1222210345_15>The Odyssey<\/SPAN>&#8221; has exceeded its original mission lifetime nearly fourfold but is expected to finally wind down in a month or two, scientists said<BR><BR><\/STRONG>Our rain chances continue to look pretty good for Friday and Saturday and this will go along with a much cooler pattern that may turn chilly next week.<BR><BR>More on all that with my late night update so check back after the witching hour! <img decoding=\"async\" src=\"https:\/\/kyweathercenter.com\/emoticons\/wink.png\" border=\"0\" \/><\/P><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I promised some information about the NASA news conference about our quiet sun. I sat in on the teleconference that was open to the media but there was little news for us weather fans. As a matter of fact&#8230; the NASA folks really did not want to answer any questions from the media on what [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1729","post","type-post","status-publish","format-standard","hentry","category-uncategorized","et-doesnt-have-format-content","et_post_format-et-post-format-standard"],"_links":{"self":[{"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=\/wp\/v2\/posts\/1729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1729"}],"version-history":[{"count":0,"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=\/wp\/v2\/posts\/1729\/revisions"}],"wp:attachment":[{"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kyweathercenter.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}