BBC Four - The Sky at Night, Secrets of the Whirlpool Galaxy

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d="M306,424h116c0.552,0,1.052-0.224,1.414-0.586S424,422.552,424,422v-92c0-0.552-0.224-1.052-0.586-1.414 S422.552,328,422,328H306c-0.552,0-1.052,0.224-1.414,0.586S304,329.448,304,330v92c0,0.552,0.224,1.052,0.586,1.414 S305.448,424,306,424z"></path> <path fill="#FFBA00" d="M210,304h212c0.552,0,1.052-0.224,1.414-0.586S424,302.552,424,302v-92c0-0.552-0.224-1.052-0.586-1.414 S422.552,208,422,208H210c-0.552,0-1.052,0.224-1.414,0.586S208,209.448,208,210v92c0,0.552,0.224,1.052,0.586,1.414 S209.448,304,210,304z"></path> </g> </svg> <span>Sport</span> </a> </li> <li class="orb-nav-weather"> <a href="https://www.bbc.co.uk/weather"> <svg class="product-icon" width="1.75em" height="1.75em" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve" focusable="false" aria-hidden="true"> <g> <path fill="#067EB3" d="M316.234,368.56l52.326-52.326c0.391-0.391,0.586-0.902,0.586-1.414c0-0.512-0.195-1.024-0.586-1.414 L252.594,197.44c-0.391-0.391-0.902-0.586-1.414-0.586s-1.024,0.195-1.414,0.586l-52.326,52.326 c-0.391,0.391-0.586,0.902-0.586,1.414s0.195,1.024,0.586,1.414L313.406,368.56c0.391,0.391,0.902,0.586,1.414,0.586 C315.332,369.146,315.844,368.95,316.234,368.56z"></path> <path fill="#1969A6" d="M90,424h74c0.552,0,1.052-0.224,1.414-0.586S166,422.552,166,422V258c0-0.552-0.224-1.052-0.586-1.414 S164.552,256,164,256H90c-0.552,0-1.052,0.224-1.414,0.586S88,257.448,88,258v164c0,0.552,0.224,1.052,0.586,1.414 S89.448,424,90,424z"></path> <path fill="#149EDC" d="M258,166h164c0.552,0,1.052-0.224,1.414-0.586S424,164.552,424,164V90c0-0.552-0.224-1.052-0.586-1.414 S422.552,88,422,88H258c-0.552,0-1.052,0.224-1.414,0.586S256,89.448,256,90v74c0,0.552,0.224,1.052,0.586,1.414 S257.448,166,258,166z"></path> </g> </svg> <span>Weather</span> </a> </li> <li class="orb-nav-iplayer"> <a 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class="skip-to-content-destination" tabindex="-1">Main content</div> <div class="b-g-p no-margin-vertical"> <div class="grid-wrapper grid-wrapper--flush map map--episode map--count-2"> <div class="grid 2/3@bpw2 2/3@bpe map__column map__column--first"> <div class="map__inner br-box-secondary" data-map-column="playout-details"> <div class="episode-playout"> <div id="episode-playout-b07g9z87" class="playout"> <img class="image " src="https://ichef.bbci.co.uk/images/ic/640x360/p03xxlp3.jpg" srcset="https://ichef.bbci.co.uk/images/ic/80x45/p03xxlp3.jpg 80w, https://ichef.bbci.co.uk/images/ic/160x90/p03xxlp3.jpg 160w, https://ichef.bbci.co.uk/images/ic/320x180/p03xxlp3.jpg 320w, https://ichef.bbci.co.uk/images/ic/480x270/p03xxlp3.jpg 480w, https://ichef.bbci.co.uk/images/ic/640x360/p03xxlp3.jpg 640w" sizes="(min-width: 63em) 64000vw, (min-width: 48em) 66.666666666667vw, (min-width: 0em) 100vw, 100vw" alt=""> <div class="playout__overlay"> <div class="playout__message delta"> Sorry, this episode is not currently available </div> </div> </div> </div> <div class="island"> <div> <h1 class="no-margin">Secrets of the Whirlpool Galaxy</h1> <div class="gamma"> <div class=""> <a class="context__item" href="/programmes/b006mk7h" tabindex="-1">The Sky at Night</a> </div> </div> </div> <div class="grid-wrapper"> <div class="grid 2/3@bpw 3/4@bpe"> <div class="episode-panel__intro"> <div class="map__intro__synopsis centi"> <div class="synopsis-toggle text--prose"> <input class="synopsis-toggle__status" id="synopsis-67425e6cb0a4d" type="checkbox" checked/> <div class="synopsis-toggle__short"> <p>A look at M51 aka the Whirlpool Galaxy. By examining it at many magnifications and wavelengths the programme will build up a detailed portrait.</p> <label class="synopsis-toggle__button br-pseudolink" for="synopsis-67425e6cb0a4d"> <span tabindex="0" role="button">Show more</span> </label> </div> <div class="synopsis-toggle__long"> <p>The Sky at Night focuses all its attention on one object - M51 aka the Whirlpool Galaxy.</p> <p>Sitting approximately 30 million light years from Earth, this spectacular spiral galaxy was first discovered in 1773 by the French astronomer Charles Messier. It is thought to have been the inspiration behind the swirling patterns of van Gogh's Starry Night, and ever since it has fascinated astronomers and star watchers.</p> <p>So for this month's Sky at Night we have declared June 1st Whirlpool Galaxy Day. On this one day we will be aiming as many telescopes as possible at the galaxy. Images will be taken by optical and infra-red telescopes on top of volcanoes in Hawaii and La Palma, the radio signature will be captured at the Mullard Radio Astronomy Observatory in Cambridge, and in orbit the Swift space telescope will aim its ultraviolet and X-ray sensors at the galaxy.</p> <p>By examining the galaxy at as many magnifications and wavelengths as possible the programme will build up a portrait of this galaxy - unlocking the secrets of the formation of the spiral arms and revealing how they have triggered a wave of intense star formation.</p> <label class="synopsis-toggle__button br-pseudolink" for="synopsis-67425e6cb0a4d"> <span tabindex="0" role="button">Show less</span> </label> </div> </div> </div> </div> </div> <div class="grid 1/3@bpw 1/4@bpe"> <div class="map__intro"> <p class="episode-panel__meta"> <svg tabindex="-1" aria-hidden="true" focusable="false" class="gelicon gelicon--centi gelicon--leading"><use xlink:href="#gelicon--core--duration" /></svg>30 minutes </p> </div> </div> </div> </div> </div> </div> <div class="grid 1/3@bpw2 1/3@bpe map__column map__column--2 map__column--last"> <div class="map__inner"> <div class="br-box-secondary" data-map-column="tx"><div class="island"> <h2>Last on</h2><div class="broadcast-event programme"> <div class="programme__img"><a href="/bbcfour" tabindex="-1"><img src="https://programmes.files.bbci.co.uk/programmes-frontend/images/logos/svg/bbc_four/service-5279d71659.svg" alt="" width="64" height="36"/></a></div><div class="programme__body programme__body--flush"> <div class="broadcast-event__time beta" data-timezone="true" title="15 Jun 2016" datatype="xsd:dateTime" content="2016-06-15T19:30:00+01:00"> <span class="broadcast-event__date text-base timezone--date">Wed 15 Jun 2016</span> <span class="timezone--time">19:30</span> </div> <div class="programme__service box-link__elevated micro text--subtle"><a href="/bbcfour">BBC Four</a></div> </div> </div> </div> </div> <div class="br-box-secondary 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class="component__footer br-box-subtle"> <a class="component__footer__link" href="/programmes/b07g9z87/clips"> <span class="component__footer__title">See all clips from Secrets of the Whirlpool Galaxy</span> <span class="component__footer__detail">(4)</span> </a> </div> </div> <div class="component component--box component--box-flushbody-vertical component--box--primary" id="credits"> <div class="component__header br-box-page"> <h2>Credits</h2> </div> <div class="component__body br-box-page"> <div> <table class="table table--slatted-vertical no-margin-vertical"> <thead class="visually-hidden"> <tr> <th>Role</th> <th>Contributor</th> </tr> </thead> <tbody> <tr> <td class="br-subtle-bg-onborder"> <span>Presenter</span> </td> <td class="br-subtle-bg-onborder"> <span>Chris Lintott</span> </td> </tr> <tr> <td class="br-subtle-bg-onborder"> <span>Presenter</span> </td> <td class="br-subtle-bg-onborder"> <span>Maggie Aderin-Pocock</span> </td> </tr> <tr> <td class="br-subtle-bg-onborder"> <span>Series Producer</span> </td> <td class="br-subtle-bg-onborder"> <span>Michael Lachmann</span> </td> </tr> <tr> <td class="br-subtle-bg-onborder"> <span>Executive Producer</span> </td> <td class="br-subtle-bg-onborder"> <span>Jonathan Renouf</span> </td> </tr> </tbody> </table> </div> </div> </div> <div class="component component--box component--box--primary" id="broadcasts"> <div class="component__header br-box-page"> <h2>Broadcasts</h2> </div> <div class="component__body br-box-page"> <div class="ml"> <div class="ml__content"> <ul class="grid-wrapper highlight-box-wrapper--grid"> <li class="grid 1/2 1/3@bpb1 1/3@bpb2 1/4@bpw 1/3@bpw2 1/3@bpe"><div class="broadcast-event programme programme--grid highlight-box--grid"> <div class="programme__img"><a href="/bbcfour" tabindex="-1"><img src="https://programmes.files.bbci.co.uk/programmes-frontend/images/logos/svg/bbc_four/service-5279d71659.svg" alt="" width="64" height="36"/></a></div><div class="programme__body 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