Dr Becky Smethurst: How do you actually find a black hole?

<p>By day Dr Becky, is an astrophysicist, unravelling the mysteries of supermassive black holes, but by night entertains science buffs like us on her <a href="https://www.youtube.com/channel/UCYNbYGl89UUowy8oXkipC-Q/featured" rel="noopener noreferrer" target="_blank">YouTube channel</a>.</p><p>In this week's episode of the <em>Science Focus Podcast</em> she explains how to find a black hole (and why they’re actually incredibly bright), what an astrophysicist does all day, and why flooding YouTube with scientists is the best way to counteract disinformation and bogus theories.</p><p>Her book <a href="https://www.orionbooks.co.uk/titles/rebecca-smethurst/space-10-things-you-should-know/9781841883830/" rel="noopener noreferrer" target="_blank"><em>Space: 10 Things You Should Know</em></a> (£9.99, Orion), is out now and you can <a href="https://www.sciencefocus.com/space/why-the-sky-is-dark-at-night/" rel="noopener noreferrer" target="_blank">read an extract from it here</a>.</p><ul><li><strong>Subscribe</strong>&nbsp;to the&nbsp;<em>Science Focus Podcast</em>&nbsp;on these services:&nbsp;<a href="https://www.acast.com/science-focus-podcast" rel="noopener noreferrer" target="_blank">Acast</a>,&nbsp;<a href="https://itunes.apple.com/gb/podcast/science-focus-podcast/id1296673906?mt=2" rel="noopener noreferrer" target="_blank">iTunes</a>,&nbsp;<a href="https://www.stitcher.com/podcast/immediate-media-2/science-focus-podcast" rel="noopener noreferrer" target="_blank">Stitcher</a>,&nbsp;<a href="https://rss.acast.com/science-focus-podcast" rel="noopener noreferrer" target="_blank">RSS</a>,&nbsp;<a href="https://overcast.fm/itunes1296673906/science-focus-podcast" rel="noopener noreferrer" target="_blank">Overcast</a></li></ul><p>Let us know what you think of the episode with a review or a comment wherever you listen to your podcasts.</p><p><strong>Listen to more episodes of the&nbsp;<em>Science Focus Podcast</em>:</strong></p><ul><li><a href="https://www.sciencefocus.com/space/kathryn-d-sullivan-what-is-it-really-like-to-w