우주전파란? | 우주로부터의 라디오 방송 | 공공데이터

<!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> 우주전파란? | 우주로부터의 라디오 방송 | 공공데이터 | 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/fontawesome.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 = '6445'; //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/main_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/main_logo.png" alt="KASI 천문우주지식정보" class="sub_logo mobile_logo"> <img src="/resources/images/main_logo.png" alt="KASI 천문우주지식정보" class="sub_logo mobile_logo_w"> </a></h1> <nav id="gnb"> <h2 class="sr-only">주메뉴</h2> <a href='#' class="mobile-nav-link"></a> </nav>  <div class="header_btn"> <a href="#" title="통합검색 바로가기" class="search" id="btnSearch"><i class="glyphicon glyphicon-search"><span class="sr-only">검색</span></i></a> <a href="#none" title="사이트맵 바로가기" class="sitemap" data-toggle="modal" data-target="#siteMapModal"><i class="glyphicon glyphicon-menu-hamburger"><span class="sr-only">사이트맵</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">2025</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">2025</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 data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_09" aria-expanded="true" aria-controls="depth2_09"> 천문우주 동영상 </a> <div id="depth2_09" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_09"> <div class="depth3_list"><a href="/learning/post/educationVideo">천문우주 교육동영상</a></div> <div class="depth3_list"><a href="/learning/post/mediaGallery">별별우주동영상</a></div> </div> </div> </div> <div class="depth2_list"> <a href="/learning/pageView/6384">천문학자</a> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth2_011" aria-expanded="true" aria-controls="depth2_011"> 논문 </a> <div id="depth2_011" class="depth2 collapse" role="tabpanel" aria-labelledby="depth2_011"> <div class="depth3_list"><a href="/learning/pageView/1623">한국천문학회지</a></div> <div class="depth3_list"><a href="/learning/pageView/1628">한국우주과학회지</a></div> <div class="depth3_list"><a href="/learning/pageView/6391">ADS 논문검색</a></div> </div> </div> </div> </div> </div> <div class="depth1"> <a data-toggle="collapse" class="collapsed" role="tab" data-parent="#accordion" href="#depth1_3" aria-expanded="true" aria-controls="depth1_3"> 천문기록관 </a> <div id="depth1_3" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_3"> <div class="depth2_list"> <a href="/almanac/pageView/26">역서별</a> </div> <div class="depth2_list"> <a href="/almanac/pageView/27">연도별</a> </div> <div class="depth2_list"> <a href="/almanac/pageView/24">천문 기록 검색</a> </div> </div> </div> <div class="depth1"> <a data-toggle="collapse" class="collapsed" role="tab" data-parent="#accordion" href="#depth1_4" aria-expanded="true" aria-controls="depth1_4"> 공공데이터 </a> <div id="depth1_4" class="depth2 collapse" role="tabpanel" aria-labelledby="depth1_4"> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth4_01" aria-expanded="true" aria-controls="depth4_01"> 은하중심 24시 </a> <div id="depth4_01" class="depth2 collapse" role="tabpanel" aria-labelledby="depth4_01"> <div class="depth3_list"><a href="/publicdata/pageView/6438">고밀도 연속관측 데이터</a></div> <div class="depth3_list"><a href="/publicdata/pageView/6439">KMTNet 데이터 받기</a></div> <div class="depth3_list"><a href="/publicdata/pageView/6440">데이터 가공사례</a></div> </div> </div> </div> <div class="depth2_list"> <div class="depth3"> <a data-toggle="collapse" role="tab" data-parent="#accordion" href="#depth4_02" aria-expanded="true" aria-controls="depth4_02"> 우리의 별 태양 </a> <div id="depth4_02" class="depth2 collapse" role="tabpanel" aria-labelledby="depth4_02"> <div class="depth3_list"><a href="/publicdata/pageView/6441">태양의 물리적 특징</a></div> <div class="depth3_list"><a href="/publicdata/pageView/6442">태양데이터</a></div> <div class="depth3_list"><a href="/publicdata/pageView/6443">데이터 활용하기</a></div> </div> 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</li> </ul> </div> </div>  <div class="content_body_right" id="cont_skip"> <div class="content_wrap"> <h6 class="first">우주에서 오는 전파(radio wave)</h6> <div class="gray_list">전파(radio wave)는 일반적으로 밀리미터에서 100 km에 이르는 긴 파장을 가진 전자기파로, TV, 라디오, 휴대전화 등 우리 일상생활에서 널리 사용되고 있습니다.</div> <div class="gray_list">우주의 성간물질이나 블랙홀, 은하, 별과 같은 여러 천체에서도 전파가 나오는데, 이를 우주전파라고 부르며, 전파망원경을 통해 관측할 수 있습니다.</div> <div class="lea_img_m"><img src="/resources/images/content/radiowave_01.png" alt="전파에서 X선에 이르기까지 파장에 따라 다른 모습을 보이는 M51 은하의 이해를 돕기 위한 화면으로, 자세한 내용은 하단에 있습니다." data-toggle="modal" data-target="#lea_modal0"> <div class="sr-only"> <p>~10cm:Radio waves</p> <p>~1mm:Millimeter</p> <p>~10µm:Infrared</p> <p>~500mm:Visible light</p> <p>~10nm:Ultraviolet</p> <p>~1nm:X Rays</p></div><span class="imgcaption">[그림] 전파(왼쪽)에서 X선에 이르기까지 파장에 따라 다른 모습을 보이는 M51 은하. <br> 일반적으로 1mm 이상의 파장의 빛(전자기파)을 전파라고 부른다. (출처: IRAM 홈페이지) <br>https://www.iram-institute.org/EN/content-page-33-4-33-0-0-0.html</span></div> <div class="modal lea_modal Submodal fade" id="lea_modal0" 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="/resources/images/content/radiowave_01.png" alt="전파에서 X선에 이르기까지 파장에 따라 다른 모습을 보이는 M51 은하의 이해를 돕기 위한 화면으로, 자세한 내용은 하단에 있습니다."> <div class="sr-only"> <p>~10cm:Radio waves</p> <p>~1mm:Millimeter</p> <p>~10µm:Infrared</p> <p>~500mm:Visible light</p> <p>~10nm:Ultraviolet</p> <p>~1nm:X Rays</p></div></div></div> <div class="gray_list">다음 소용돌이 은하로 알려진 M81 은하를 광학 망원경과 전파 망원경으로 관측한 모습을 비교해 보면, 흥미로운 사실을 알 수 있습니다. 왼쪽 그림은 M81 은하의 가시광 모습인데, 은하에 속한 별들이 내는 빛이 검게 나타나고 있습니다. 오른쪽 그림은 21cm 파장의 수소원자가 내는 빛(전파 신호의 세기)을 나타나 내는데, 광학 관측에서 밝게 빛나는 은하들이 물리적으로 떨어져 보이지만, 전파 관측에서는 서로 연결되어 상호작용을 하고 있음을 알 수 있습니다. 이처럼 전파 관측은 광학 관측에서 보이지 않는 다른 물리적 현상들을 관찰할 수 있습니다. </div> <div class="lea_img_m"><img src="/resources/images/content/radiowave_02.png" alt="(좌) M81 은하를 광학 망원경으로 관측한 모습, (우) M81 은하의 21cm 중성수소 밝기 분포" data-toggle="modal" data-target="#lea_modal1"><span class="imgcaption">[그림] (좌) M81 은하를 광학 망원경으로 관측한 모습, (우) M81 은하의 21cm 중성수소 밝기 분포 (출처: NRAO/AUI)</span></div> <div class="modal lea_modal Submodal fade" id="lea_modal1" 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="/resources/images/content/radiowave_02.png" alt="(좌) M81 은하를 광학 망원경으로 관측한 모습, (우) M81 은하의 21cm 중성수소 밝기 분포"></div></div></div> <div id="upDateinfo" class="upDateinfo"> <span class="division_blue">최종수정일</span> <p class="date"> 2020년 5월 28일 </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> <a href="https://www.kasi.re.kr/" target="_blank">한국천문연구원 홈페이지 바로가기</a> <button type="button" data-toggle="modal" id="prtcipSiteBtn" data-target="#familySiteModal"> 관련사이트 <img src="/resources/images/common/footer_ico_modal.png" alt="" class="ico_modal"> <img src="/resources/images/common/footer_ico_modal_w.png" alt="" class="ico_w_modal"> </button> <div class="clearfix"></div> </div> </div> <div class="grab"> <address class="address">(34055) 대전광역시 유성구 대덕대로 776     전화: 080-373-3333(무료) / 042-865-3333(유료)     천문정보 ARS: 042-865-3332     팩스: 042-861-5610</address> <p class="copyright">Copyright (C) 2017 Korea Astronomy and Space Science Institute. 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