To look into deep space is to look back in time. With the upcoming launch of the James Webb Space Telescope, scientists hope to see “cosmic dawn,” a period long ago when the first starlight transformed the universe. But what happened before cosmic dawn? The Webb can’t tell us, though future telescopes could. For more, go to http://vox.com/unexplainable It’s a great place to sign up for our newsletter, view show transcripts, and read more about the topics on our show. Also, email us! unexplainable@vox.com We read every email. Support Unexplainable by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices