허셜의 행성 | 천왕성 | 태양계 | 천문학습관

<!DOCTYPE html> <html lang="ko">     <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> <meta name="description" content=""> <meta name="author" content=""> <meta name="keyword" content=""> <link rel="shortcut icon" href="/resources/images/favicon.ico"> <title> 허셜의 행성 | 천왕성 | 태양계 | 천문학습관 | 천문우주지식정보 </title> <link href="/resources/css/bootstrap.css" rel="stylesheet"> <link href="/resources/css/datepicker.css" rel="stylesheet"> <link href="/resources/css/common.css" rel="stylesheet"> <link href="/resources/css/font-awesome.min.css" rel="stylesheet"> <link href="/resources/css/print.css" rel="stylesheet"> <script type="text/javascript" src="/resources/js/jquery.min.js"></script> <script type="text/javascript" src="/resources/js/jquery.easing.js"></script> <script type="text/javascript" src="/resources/js/common.js"></script> <script type="text/javascript" src="/resources/js/nav.js"></script> <script type="text/javascript" src="/resources/js/content.js"></script> <script type="text/javascript" src="/resources/js/jquery.matchHeight-min.js"></script> <script type="text/javascript" src="/resources/js/kasiSns.js"></script>   <link href="/resources/css/layout.css" rel="stylesheet"> <link href="/resources/css/contents-type.css" rel="stylesheet"> <link href="/resources/css/contents-board.css" rel="stylesheet">   <link href="/resources/css/kr_access.css" rel="stylesheet"> <script type="text/javascript"> (function(H){H.className=H.className.replace(/\bno-js\b/,'js')})(document.documentElement) </script> <script type="text/javascript" src="/resources/js/common.js"></script> <script type="text/javascript" src="/resources/js/bbsCommon.js"></script> <script type="text/javascript"> //천문학습관_인코딩 변환 처리. function unicode2Utf ( param ) { //alert(param); var regExp = /\&#([0-9]*)/g; var result = param.match(regExp); var utf = ""; if ( result != null ) { for (var i=0; i<result.length; i++) { utf += String.fromCharCode(result[i].replace("&#", "")); } return utf; } } $(function(){ var menu_1_name = $('#location_wrap .location > div[class="dropdown"]').eq(0).find('a').find('span').text(); //var page_seq = '5157'; //천문학습관. if ( '천문학습관' == menu_1_name ) { //if ( page_seq > 5026 && page_seq < 6367 ) { //유니코드 변환처리. $('.content_wrap uni').each(function(){ $(this).text(unicode2Utf($(this).text())); }); $("table").each(function(){ var table_class = $(this).attr('class'); $(this).removeAttr('class'); $(this).prop('class','table tbl_cnt tbl_border'); if ( table_class != undefined && table_class.indexOf('tbl_border_none') > -1 ) { $(this).addClass('tbl_border_none'); } }); $("div[class^='lea_img'] img").each(function(index){ $(this).attr('data-toggle','modal'); $(this).attr('data-target','#lea_modal'+index); var img_alt = $(this).attr('alt'); if ( img_alt == undefined ) { img_alt = ''; $(this).attr('alt',''); } //img 클릭 시, 모달로 크게 보기. $("div[class='content_wrap']").append('<div class="modal lea_modal Submodal fade" id="lea_modal' + index + '" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"><div class="modal-dialog"><button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button><img src="' + $(this).attr('src') + '" alt="' + img_alt + '" /></div></div>'); }); } //파일 다운로드 $("a[downaftnm]:not(a[preview])").each(function(){ $(this).prop("href", "javascript:downLocation('" + $(this).attr('downaftnm') + "','" + $(this).attr('downbefnm') + "');"); $(this).prop("onkeypress", "this.onclick();"); $(this).removeAttr('downaftnm'); $(this).removeAttr('downbefnm'); $(this).removeAttr('target'); }); //파일 미리보기 $("a[preview]").each(function(){ $(this).prop("href", "javascript:filePreview('" + $(this).attr('downaftnm') + "','','/content/view');"); $(this).prop("onkeypress", "this.onclick();"); $(this).removeAttr('downaftnm'); $(this).removeAttr('downbefnm'); $(this).removeAttr('preview'); $(this).removeAttr('target'); }); }); </script> </head> <body>  <div id="accessibility"> <a href="#cont_skip">본문 바로가기</a> <a href="#header_wrap">메뉴바로가기</a> </div>   <div id="sub_wrap">  <script type="text/javascript" src="/resources/js/search/search.js"></script> <script type="text/javascript"> $(function(){ if($(".depth_3").length || $(".tab").length || $(".step").length){ $(".depth_3 li a, .tab li a, .step li .cont").matchHeight({ byRow: true, property: 'height', target: null, remove: false }); } //메뉴 var navMenu = $("#nav li"), childUl = $('ul'); $.fn.showMenu = function() { return $(this).children(childUl).stop().addClass('on'); } $.fn.hideMenu = function() { return $(this).children(childUl).stop().removeClass('on'); } navMenu.mouseover($.fn.showMenu); navMenu.mouseleave($.fn.hideMenu); navMenu.focusin($.fn.showMenu); navMenu.next().focusin(function(){ $(this).siblings().children(childUl).stop().removeClass('on'); }); navMenu.next('li:last').focusout(function(){ navMenu.children(childUl).stop().removeClass('on'); }); // 서브메뉴 포커스 추가 $('.home>a').focus(function(){ $('div[class="location"] div:eq(1)>ul').hide(); }) $('div[class="location"] div:eq(1)>a').focus(function(){ $('div[class="location"] div:eq(1)>ul').show(); $('div[class="location"] div:eq(2)>ul').hide(); }) $('div[class="location"] div:eq(2)>a').focus(function(){ $('div[class="location"] div:eq(1)>ul').hide(); $('div[class="location"] div:eq(2)>ul').show(); $('div[class="location"] div:eq(3)>ul').hide(); }) $('div[class="location"] div:eq(3)>a').focus(function(){ $('div[class="location"] div:eq(2)>ul').hide(); $('div[class="location"] div:eq(3)>ul').show(); $('div[class="location"] div:eq(4)>ul').hide(); }) $('div[class="location"] div:eq(4)>a').focus(function(){ $('div[class="location"] div:eq(3)>ul').hide(); $('div[class="location"] div:eq(4)>ul').show(); }) $('.facebook').focus(function(){ $('div[class="location"] div:eq(2)>ul').hide(); $('div[class="location"] div:eq(3)>ul').hide(); $('div[class="location"] div:eq(4)>ul').hide(); }) $('a[href="#header_wrap"]').on('click',function(){ setTimeout(function(){ $('div[class="header grab"] nav ul li:eq(0) a:eq(0)').focus(); },0) }) $('a[href="#gnb"]').on('click',function(){ setTimeout(function(){ $('div[class="header grab"] nav ul li:eq(0) a:eq(0)').focus(); },0) }) }); </script>  <header id="header_wrap"> <div class="header grab"> <h1><a class="navbar-brand" href="/index"> <img src="/resources/images/logo.png" alt="KASI 한국천문연구원 천문우주지식정보" class="sub_logo"> <img src="/resources/images/main_logo.png" alt="KASI 한국천문연구원 천문우주지식정보" class="main_logo"> <img src="/resources/images/common/logo_mobile.png" alt="KASI 천문우주지식정보" class="sub_logo mobile_logo"> <img src="/resources/images/common/logo_mobile_w.png" alt="KASI 천문우주지식정보" class="sub_logo mobile_logo_w"> </a></h1> <nav id="gnb"> <h2 class="sr-only">주메뉴</h2> <ul id="nav" class="nav"> <li> <a href="/life/pageView/39">생활천문관</a> <ul> <li> <a href="/life/pageView/8">음양력변환계산</a> </li> <li> <a href="/life/pageView/5">월별 음양력</a> </li> <li> <a href="/life/post/calendarData">달력자료(월력요항)</a> </li> <li> <a href="/life/pageView/9">일출일몰시각계산</a> </li> <li> <a href="/life/pageView/6">월별 해/달 출몰시각</a> </li> <li> <a href="/life/pageView/10">태양 고도/방위각계산</a> </li> <li> <a href="/life/pageView/7">월별 천문현상</a> </li> </ul> </li> <li> <a href="/learning/pageView/40" class="active">천문학습관</a> <ul> <li> <a href="/learning/pageView/5108">태양계</a> </li> <li> <a href="/learning/pageView/6233">일식</a> </li> <li> <a href="/learning/pageView/5934">월식</a> </li> <li> <a href="/learning/pageView/6372">천체</a> </li> <li> <a href="/learning/pageView/5204">천체물리학</a> </li> <li> <a href="/learning/pageView/5053">우주탐사</a> </li> <li> <a href="/learning/pageView/5058">별자리</a> </li> <li> <a href="/learning/pageView/5064">망원경</a> </li> <li> <a href="/learning/post/educationVideo">천문우주 동영상</a> </li> <li> <a href="/learning/pageView/6384">천문학자</a> </li> <li> <a href="/learning/pageView/1623">논문</a> </li> </ul> </li> <li> <a href="/almanac/pageView/41">천문기록관</a> <ul> <li> <a href="/almanac/pageView/26?file=/file/astro_almanac_pdf/20231023135218580.pdf">역서별</a> </li> <li> <a href="/almanac/pageView/27">연도별</a> </li> <li> <a href="/almanac/pageView/24">천문 기록 검색</a> </li> </ul> </li> <li> <a href="/publicdata/pageView/6437">공공데이터</a> <ul> <li> <a href="/publicdata/pageView/6438">은하중심 24시</a> </li> <li> <a href="/publicdata/pageView/6441">우리의 별 태양</a> </li> <li> <a href="/publicdata/pageView/6445">우주로부터의 라디오 방송</a> </li> </ul> </li> <li> <a href="/community/post/faq">천문지식참여</a> <ul> <li> <a href="/community/post/faq">자주하는 질문</a> </li> </ul> </li> <li> <a href="/information/pageView/31">정보공개&활용</a> <ul> <li> <a href="/information/pageView/31">Open API</a> </li> <li> <a href="/information/ticker/pageView/32">티커서비스</a> </li> <li> <a href="">천문갤러리</a> </li> </ul> </li> </ul> <a href='#' class="mobile-nav-link"></a> </nav>  <div class="header_btn"> <a href="#none" title="사이트맵 바로가기" class="sitemap" data-toggle="modal" data-target="#siteMapModal"><i class="ico_sitemap"><span class="sr-only">사이트맵</span></i></a> <a href="#" title="통합검색 바로가기" class="search" id="btnSearch"><i class="ico_search"><span class="sr-only">검색</span></i></a> </div>  </div> <nav class="mobile_nav"> <div class="nav-menu"> <div class="top-btn"> <a href="#" data-toggle="modal" data-target="#siteMapModal" class="b_sitemap">사이트맵</a> <a href="/search/search" class="b_search">통합검색</a> </div> <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true"> <div class="depth1"> <a data-toggle="collapse" class="collapsed" role="tab" data-parent="#accordion" href="#depth1_1" aria-expanded="true" aria-controls="depth1_1"> 생활천문관 </a> <div id="depth1_1" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_1"> <div class="depth2_list"> <a href="/life/pageView/8">음양력변환계산</a> </div> <div class="depth2_list"> <a href="/life/pageView/5">월별 음양력</a> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth1_03" aria-expanded="true" aria-controls="depth1_03"> 달력자료(월력요항) </a> <div id="depth1_03" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_03"> <div class="depth3_list"><a href="/life/post/calendarData">달력자료</a></div> <div class="depth3_list"><a href="/life/post/almanac">월력요항</a></div> </div> </div> </div> <div class="depth2_list"> <a href="/life/pageView/9">일출일몰시각계산</a> </div> <div class="depth2_list"> <a href="/life/pageView/6">월별 해/달 출몰시각</a> </div> <div class="depth2_list"> <a href="/life/pageView/10">태양 고도/방위각계산</a> </div> <div class="depth2_list"> <a href="/life/pageView/7">월별 천문현상</a> </div> </div> </div> <div class="depth1"> <a data-toggle="collapse" class="collapsed" role="tab" data-parent="#accordion" href="#depth1_2" aria-expanded="true" aria-controls="depth1_2"> 천문학습관 </a> <div id="depth1_2" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_2"> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_01" aria-expanded="true" aria-controls="depth2_01"> 태양계 </a> <div id="depth2_01" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_01"> <div class="depth3_list"><a href="/learning/pageView/5108">태양계 개요</a></div> <div class="depth3_list"><a href="/learning/pageView/5123">태양</a></div> <div class="depth3_list"><a href="/learning/pageView/5132">수성</a></div> <div class="depth3_list"><a href="/learning/pageView/5135">금성</a></div> <div class="depth3_list"><a href="/learning/pageView/5138">지구</a></div> <div class="depth3_list"><a href="/learning/pageView/5145">화성</a></div> <div class="depth3_list"><a href="/learning/pageView/5148">목성</a></div> <div class="depth3_list"><a href="/learning/pageView/5152">토성</a></div> <div class="depth3_list"><a href="/learning/pageView/5157">천왕성</a></div> <div class="depth3_list"><a href="/learning/pageView/5161">해왕성</a></div> <div class="depth3_list"><a href="/learning/pageView/5165">왜소행성</a></div> <div class="depth3_list"><a href="/learning/pageView/5168">소행성</a></div> <div class="depth3_list"><a href="/learning/pageView/5172">혜성</a></div> <div class="depth3_list"><a href="/learning/pageView/5175">유성</a></div> <div class="depth3_list"><a href="/learning/pageView/5027">카이퍼 벨트</a></div> <div class="depth3_list"><a href="/learning/pageView/5028">오르트 구름</a></div> <div class="depth3_list"><a href="/learning/pageView/5178">우주천문학</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_02" aria-expanded="true" aria-controls="depth2_02"> 일식 </a> <div id="depth2_02" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_02"> <div class="depth3_list"><a href="/learning/pageView/6299">1991~2000</a></div> <div class="depth3_list"><a href="/learning/pageView/6189">2001~2010</a></div> <div class="depth3_list"><a href="/learning/pageView/6209">2011~2020</a></div> <div class="depth3_list"><a href="/learning/pageView/6233">2021~2030<span class="label">2024</span></a></div> <div class="depth3_list"><a href="/learning/pageView/6255">2031~2040</a></div> <div class="depth3_list"><a href="/learning/pageView/6277">2041~2050</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_03" aria-expanded="true" aria-controls="depth2_03"> 월식 </a> <div id="depth2_03" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_03"> <div class="depth3_list"><a href="/learning/pageView/5773">1951~1960</a></div> <div class="depth3_list"><a href="/learning/pageView/5796">1961~1970</a></div> <div class="depth3_list"><a href="/learning/pageView/5819">1971~1980</a></div> <div class="depth3_list"><a href="/learning/pageView/5842">1981~1990</a></div> <div class="depth3_list"><a href="/learning/pageView/5888">1991~2000</a></div> <div class="depth3_list"><a href="/learning/pageView/5864">2001~2010</a></div> <div class="depth3_list"><a href="/learning/pageView/5911">2011~2020</a></div> <div class="depth3_list"><a href="/learning/pageView/5934">2021~2030<span class="label">2024</span></a></div> <div class="depth3_list"><a href="/learning/pageView/5956">2031~2040</a></div> <div class="depth3_list"><a href="/learning/pageView/5979">2041~2050</a></div> <div class="depth3_list"><a href="/learning/pageView/6322">2051~2060</a></div> <div class="depth3_list"><a href="/learning/pageView/6345">2061~2070</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_04" aria-expanded="true" aria-controls="depth2_04"> 천체 </a> <div id="depth2_04" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_04"> <div class="depth3_list"><a href="/learning/pageView/6372">항성</a></div> <div class="depth3_list"><a href="/learning/pageView/5198">성운과 성단</a></div> <div class="depth3_list"><a href="/learning/pageView/5201">은하</a></div> <div class="depth3_list"><a href="/learning/pageView/5038">메시에 목록</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_05" aria-expanded="true" aria-controls="depth2_05"> 천체물리학 </a> <div id="depth2_05" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_05"> <div class="depth3_list"><a href="/learning/pageView/5204">행성의 거리</a></div> <div class="depth3_list"><a href="/learning/pageView/5206">밝기</a></div> <div class="depth3_list"><a href="/learning/pageView/5208">스펙트럼</a></div> <div class="depth3_list"><a href="/learning/pageView/5042">색깔과 온도</a></div> <div class="depth3_list"><a href="/learning/pageView/5209">별의 위치</a></div> <div class="depth3_list"><a href="/learning/pageView/5214">별의 거리</a></div> <div class="depth3_list"><a href="/learning/pageView/5224">천체역학</a></div> <div class="depth3_list"><a href="/learning/pageView/5230">역학</a></div> <div class="depth3_list"><a href="/learning/pageView/6387">이론</a></div> <div class="depth3_list"><a href="/learning/pageView/6380">우주론</a></div> <div class="depth3_list"><a href="/learning/pageView/5048">천문단위</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_06" aria-expanded="true" aria-controls="depth2_06"> 우주탐사 </a> <div id="depth2_06" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_06"> <div class="depth3_list"><a href="/learning/pageView/5053">로켓의 발달</a></div> <div class="depth3_list"><a href="/learning/pageView/5054">우주왕복선</a></div> <div class="depth3_list"><a href="/learning/pageView/5258">태양계 탐사</a></div> <div class="depth3_list"><a href="/learning/pageView/5262">외계행성 찾기</a></div> <div class="depth3_list"><a href="/learning/pageView/5264">외계생명체 찾기</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_07" aria-expanded="true" aria-controls="depth2_07"> 별자리 </a> <div id="depth2_07" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_07"> <div class="depth3_list"><a href="/learning/pageView/5058">별자리 기원</a></div> <div class="depth3_list"><a href="/learning/pageView/5059">별자리 상식</a></div> <div class="depth3_list"><a href="/learning/pageView/5267">북반구의 별자리</a></div> <div class="depth3_list"><a href="/learning/pageView/5272">별자리 전설</a></div> <div class="depth3_list"><a href="/learning/pageView/5324">별자리 구성</a></div> <div class="depth3_list"><a href="/learning/pageView/5376">동양의 별자리</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_08" aria-expanded="true" aria-controls="depth2_08"> 망원경 </a> <div id="depth2_08" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_08"> <div class="depth3_list"><a href="/learning/pageView/5064">역사</a></div> <div class="depth3_list"><a href="/learning/pageView/5387">원리</a></div> <div class="depth3_list"><a href="/learning/pageView/5390">종류</a></div> <div class="depth3_list"><a href="/learning/pageView/5394">가대</a></div> <div class="depth3_list"><a href="/learning/pageView/5396">활용</a></div> <div class="depth3_list"><a href="/learning/pageView/5069">선택방법</a></div> <div class="depth3_list"><a href="/learning/pageView/5402">관련부품</a></div> <div class="depth3_list"><a href="/learning/pageView/6388">국내천문대</a></div> <div class="depth3_list"><a href="/learning/pageView/6394">세계의 망원경</a></div> <div class="depth3_list"><a href="/learning/pageView/5384">고천문의기</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a 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href="/learning/pageView/5138">지구 </a> </li> <li> <a href="/learning/pageView/5145">화성 </a> </li> <li> <a href="/learning/pageView/5148">목성 </a> </li> <li> <a href="/learning/pageView/5152">토성 </a> </li> <li> <a href="/learning/pageView/5157" class="active">천왕성 </a> </li> <li> <a href="/learning/pageView/5161">해왕성 </a> </li> <li> <a href="/learning/pageView/5165">왜소행성 </a> </li> <li> <a href="/learning/pageView/5168">소행성 </a> </li> <li> <a href="/learning/pageView/5172">혜성 </a> </li> <li> <a href="/learning/pageView/5175">유성 </a> </li> <li> <a href="/learning/pageView/5027">카이퍼 벨트 </a> </li> <li> <a href="/learning/pageView/5028">오르트 구름 </a> </li> <li> <a href="/learning/pageView/5178">우주천문학 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav2" data-parent="#accordion" href="#leftNav2_drop" aria-expanded="true" aria-controls="leftNav2_drop"> 일식 </a> <ul id="leftNav2_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav2"> <li> <a href="/learning/pageView/6299">1991~2000 </a> </li> <li> <a href="/learning/pageView/6189">2001~2010 </a> </li> <li> <a href="/learning/pageView/6209">2011~2020 </a> </li> <li> <a href="/learning/pageView/6233">2021~2030 <span class="label">2024</span> </a> </li> <li> <a href="/learning/pageView/6255">2031~2040 </a> </li> <li> <a href="/learning/pageView/6277">2041~2050 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav3" data-parent="#accordion" href="#leftNav3_drop" aria-expanded="true" aria-controls="leftNav3_drop"> 월식 </a> <ul id="leftNav3_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav3"> <li> <a href="/learning/pageView/5773">1951~1960 </a> </li> <li> <a href="/learning/pageView/5796">1961~1970 </a> </li> <li> <a href="/learning/pageView/5819">1971~1980 </a> </li> <li> <a href="/learning/pageView/5842">1981~1990 </a> </li> <li> <a href="/learning/pageView/5888">1991~2000 </a> </li> <li> <a href="/learning/pageView/5864">2001~2010 </a> </li> <li> <a href="/learning/pageView/5911">2011~2020 </a> </li> <li> <a href="/learning/pageView/5934">2021~2030 <span class="label">2024</span> </a> </li> <li> <a href="/learning/pageView/5956">2031~2040 </a> </li> <li> <a href="/learning/pageView/5979">2041~2050 </a> </li> <li> <a href="/learning/pageView/6322">2051~2060 </a> </li> <li> <a href="/learning/pageView/6345">2061~2070 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav4" data-parent="#accordion" href="#leftNav4_drop" aria-expanded="true" aria-controls="leftNav4_drop"> 천체 </a> <ul id="leftNav4_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav4"> <li> <a href="/learning/pageView/6372">항성 </a> </li> <li> <a href="/learning/pageView/5198">성운과 성단 </a> </li> <li> <a href="/learning/pageView/5201">은하 </a> </li> <li> <a href="/learning/pageView/5038">메시에 목록 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav5" data-parent="#accordion" href="#leftNav5_drop" aria-expanded="true" aria-controls="leftNav5_drop"> 천체물리학 </a> <ul id="leftNav5_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav5"> <li> <a href="/learning/pageView/5204">행성의 거리 </a> </li> <li> <a href="/learning/pageView/5206">밝기 </a> </li> <li> <a href="/learning/pageView/5208">스펙트럼 </a> </li> <li> <a href="/learning/pageView/5042">색깔과 온도 </a> </li> <li> <a href="/learning/pageView/5209">별의 위치 </a> </li> <li> <a href="/learning/pageView/5214">별의 거리 </a> </li> <li> <a href="/learning/pageView/5224">천체역학 </a> </li> <li> <a href="/learning/pageView/5230">역학 </a> </li> <li> <a href="/learning/pageView/6387">이론 </a> </li> <li> <a href="/learning/pageView/6380">우주론 </a> </li> <li> <a href="/learning/pageView/5048">천문단위 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav6" data-parent="#accordion" href="#leftNav6_drop" aria-expanded="true" aria-controls="leftNav6_drop"> 우주탐사 </a> <ul id="leftNav6_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav6"> <li> <a href="/learning/pageView/5053">로켓의 발달 </a> </li> <li> <a href="/learning/pageView/5054">우주왕복선 </a> </li> <li> <a href="/learning/pageView/5258">태양계 탐사 </a> </li> <li> <a href="/learning/pageView/5262">외계행성 찾기 </a> </li> <li> <a href="/learning/pageView/5264">외계생명체 찾기 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav7" data-parent="#accordion" href="#leftNav7_drop" aria-expanded="true" aria-controls="leftNav7_drop"> 별자리 </a> <ul id="leftNav7_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav7"> <li> <a href="/learning/pageView/5058">별자리 기원 </a> </li> <li> <a href="/learning/pageView/5059">별자리 상식 </a> </li> <li> <a href="/learning/pageView/5267">북반구의 별자리 </a> </li> <li> <a href="/learning/pageView/5272">별자리 전설 </a> </li> <li> <a href="/learning/pageView/5324">별자리 구성 </a> </li> <li> <a href="/learning/pageView/5376">동양의 별자리 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav8" data-parent="#accordion" href="#leftNav8_drop" aria-expanded="true" aria-controls="leftNav8_drop"> 망원경 </a> <ul id="leftNav8_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav8"> <li> <a href="/learning/pageView/5064">역사 </a> </li> <li> <a href="/learning/pageView/5387">원리 </a> </li> <li> <a href="/learning/pageView/5390">종류 </a> </li> <li> <a href="/learning/pageView/5394">가대 </a> </li> <li> <a href="/learning/pageView/5396">활용 </a> </li> <li> <a href="/learning/pageView/5069">선택방법 </a> </li> <li> <a href="/learning/pageView/5402">관련부품 </a> </li> <li> <a href="/learning/pageView/6388">국내천문대 </a> </li> <li> <a href="/learning/pageView/6394">세계의 망원경 </a> </li> <li> <a href="/learning/pageView/5384">고천문의기 </a> </li> </ul> <a data-toggle="collapse" role="tab" id="leftNav9" data-parent="#accordion" href="#leftNav9_drop" aria-expanded="true" aria-controls="leftNav9_drop"> 천문우주 동영상 </a> <ul id="leftNav9_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav9"> <li> <a href="/learning/post/educationVideo">천문우주 교육동영상 </a> </li> <li> <a href="/learning/post/mediaGallery">별별우주동영상 </a> </li> </ul> <a role="tab" id="leftNav10" data-parent="#accordion" href="/learning/pageView/6384" aria-expanded="true" aria-controls="leftNav10_drop"> 천문학자 </a> <ul id="leftNav10_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav10"> </ul> <a data-toggle="collapse" role="tab" id="leftNav11" data-parent="#accordion" href="#leftNav11_drop" aria-expanded="true" aria-controls="leftNav11_drop"> 논문 </a> <ul id="leftNav11_drop" class="panel-collapse collapse" role="tabpanel" aria-labelledby="leftNav11"> <li> <a href="/learning/pageView/1623">한국천문학회지 </a> </li> <li> <a href="/learning/pageView/1628">한국우주과학회지 </a> </li> <li> <a href="/learning/pageView/6391">ADS 논문검색 </a> </li> </ul> </div> </div>  <div class="content_body_right" id="cont_skip"> <div class="box tab"> <ul class="cont w25"> <li class="active"><a href="/learning/pageView/5157">허셜의 행성</a></li> <li ><a href="/learning/pageView/5158">천왕성의 물리적 성질</a></li> <li ><a href="/learning/pageView/5159">천왕성의 다섯 위성들</a></li> <li ><a href="/learning/pageView/5160">천왕성 탐사</a></li> </ul> </div> <div class="content_wrap"> <h5>허셜의 행성</h5> <div class="lea_img_r"><img src="/file/astro_page/496003688989255.jpg" width="450" alt="천왕성 이미지"></div> <div>토성의 궤도를 넘어서면 청녹색의 행성 천왕성이 존재한다. 천왕성은 1781년 4월 천문학자이자 음악가인 허셜(William Herschel)에 의해 처음으로 발견되었다. 1781년 3월 그는 쌍둥이자리 근처에서 이상한 천체를 발견하였으나 이를 태양에서 멀리 떨어져 있어 꼬리가 아직 발달되지 않은 혜성일 것이라 생각했다. 이후 꾸준한 관측결과 이 천체가 태양을 중심으로 공전하는 행성인 것을 확인 하였다. <br> <br> 천왕성은 육안이 아닌 망원경으로 발견된 최초의 행성이며, 전 세계 아마추어 천문학자들에게 희망을 주었을 뿐 아니라 발견된 궤도위치가 독일의 천문학자 보데(Johann Elert Bode)가 주장한 보데의 법칙을 증명해주었다 점에서 더 유명해졌다. <br> <br> 천왕성은 반지름 25,559km의 구형으로서 토성의 지름의 약 1/2보다 조금 작고 목성 지름의 약 1/3에 해당한다. 그러나 지구보다는 약 4배나 크다. 망원경으로 보아도 아주 작고 흐려 크기를 결정할 수 없었던 천왕성의 지름을 측정할 수 있었던 것은 1977년 어떤 행성이 다른 별의 표면을 통과하는 엄폐(掩蔽)현상이 이 천왕성에게 나타났기 때문이다. 이 때 천왕성이 움직이는 속도와 별을 가리는 시간을 측정하여 계산한 결과 지금 우리가 알고 있는 천왕성의 지름을 계산할 수 있었던 것이다. 천왕성의 질량은 목성, 토성보다 작긴 하지만 지구의 약 15배에 이르는 8.7×10<sup>25</sup>kg이다.</div> <h6>신화로 보는 천왕성</h6> <div class="lea_img"><img src="/file/astro_page/496003897583367.JPG" width="120" alt="천왕성 상징 이미지"></div> <div>우라노스(Uranus), 천왕성은 고대인이 지은 이름이 아닌 근세 이후에 발견된 행성으로, 사용되지 않은 신화속의 인물의 이름이 붙은 것이다. 즉 천체의 겉모습이나 운행상의 특징으로 붙는 신의 이름과는 거리가 멀다. 또한 우라노스는 그리스 신화에서 유래된 명칭이며 그리스 신화의 주신 제우스의 할아버지에 해당한다. 그리고 크로노스(토성)가 아들인 제우스(목성)에게 쫓겨난 것처럼 우라노스(천왕성) 또한 아들인 크로노스(토성)의 아버지로서 쫓겨났다.</div></div> <div id="upDateinfo" class="upDateinfo"> <span class="division_blue">최종수정일</span> <p class="date"> 2020년 6월 1일 </p> </div> </div> </div> </section>   <footer class="footer"> <div class="link"> <div class="grab"> <a class="fir" href="https://www.kasi.re.kr/kor/post/privacy" target="_blank">개인정보처리방침</a> <a href="/pageView/36">저작권정책</a> <button type="button" data-toggle="modal" id="prtcipSiteBtn" data-target="#familySiteModal"> 관련사이트 <img 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