<p class="MsoNormal">A question from Renny, age 4. <a href= "https://web.ipac.caltech.edu/staff/christia/">Dr. Jessie Christensen</a> answers. For more on Dr. Christensen's work, see episodes <a href= "https://www.listentospacepod.com/episodes/2016/4/24/episode-42-finding-exoplanets-with-dr-christiansen"> 42</a> and <a href= "https://www.listentospacepod.com/episodes/2017/7/1/102-a-thrilling-tale-of-discovery-with-dr-christiansen"> 102</a>.</p>

231: How big is space?

Hear stories about the alien moons orbiting our Sun, of cold stars, and the future of space exploration.  Every week, scientist Dr. Carrie Nugent chats about an amazing part of our universe with an expert guest. Spacepod is the podcast that gives you an inside look into space exploration. Learn more: http://listentospacepod.com