Sun rotation movie showing sunspot group AR 2192 crackling
<p>Credit: Solar Dynamics Observatory, NASA
Downloaded 2014 October 21 3:45 pm EDT
</p>
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<bdo lang="en" dir="ltr"><a href="//commons.wikimedia.org/wiki/Commons:YouTube_files" title="Commons:YouTube files">YouTube</a>: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=J19vi8UPKck"><bdi lang="">Sunspot Group AR 2192 Crackles</bdi></a> – View/save archived versions on <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/https://www.youtube.com/watch?v=J19vi8UPKck">archive.org</a> and <a rel="nofollow" class="external text" href="https://archive.today/https://www.youtube.com/watch?v=J19vi8UPKck">archive.today</a></bdo>