There are hundreds of billions of stars in the galaxy we live in. Many of them have their own exoplanets. So why haven’t we found proof of alien life yet? And what’s the probability of us contacting or being contacted anyway? That’s exactly what a famous math formula called the Drake Equation tries to answer. It takes into account a whole variety of factors, including the rate at which stars like the Sun are born, how many of those stars have planets, how many of those planets are hospitable to life and the likelihood of intelligent life on that habitable planet communicating with us. Today on the show, <a href="https://www.npr.org/people/1082526815/regina-g-barber"target="_blank" >Regina Barber</a> and <a href="https://www.sevenrasmussen.com/"target="_blank" >Seven Rasmussen</a> talk about the equation as it was created back in 1961 – and whether it still matters for astrobiologists today. Interested in more episodes on space or math? Email us your question at <a href="mailto:shortwave@npr.org"target="_blank" >shortwave@npr.org</a> – we might answer it in a future episode! Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at <a href="http://plus.npr.org"target="_blank" >plus.npr.org</a>.  See <a href="https://pcm.adswizz.com">pcm.adswizz.com</a> for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences. <a href="https://www.npr.org/about-npr/179878450/privacy-policy">NPR Privacy Policy</a>

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