",{"id":"SIGNIN"}).html('
×
').appendTo("body");jQuery("#SIGNIN").on('click',function(e){closeLogin()})},closeLogin=function(){jQuery("#SIGNIN").remove();jQuery("body").css("overflow","inherit")},adjustLoginHeight=function(h){jQuery("#Oframe").height(h)},login_success=function(sess){jQuery(".sign-up").html("LOGOUT").on('click',function(){location.href="https://signin."+DOMAIN+"/oauth/logout"});closeLogin()},LANG='en',commentHeight=function(data){jQuery("#block-ibt-comment iframe").height(data.height)};var login_success=function(sess){closeLogin();jQuery("article").removeClass("wall");jQuery(".login-btn .sign-up2").hide();jQuery(".login-btn .myaccount").show();jQuery(".only-before-login").hide();if(typeof sess=='object'){sess=sess.sess};jQuery("
",{"id":"TEMPE"}).html('').appendTo("body");jQuery("#TEMPE iframe").on("load",function(){jQuery("#TEMPE").remove();if(jQuery("iframe.comment").length){jQuery("iframe.comment").get(0).contentWindow.postMessage({'action':'success',},'*')}});afterLogin()};function afterLogin(){};doFir.push(function(){jQuery(document).ready(function(){jQuery(".sign-up2").on('click',function(e){e.preventDefault();e.stopPropagation();openLogin('https://signin.'+DOMAIN.replace(/ibtimes\.[\.a-z]+/,'ibtimes.com')+'/oauth?l='+jQuery(this).attr('data-lang'))})})})
Melina Thévenot, who is working with a NASA-funded project searching for brown dwarfs and Planet Nine, discovered J0207. The object is the coldest and oldest white dwarf ever detected and the first known white dwarf with multiple rings.