In this week's questions show, I answer when the cosmic microwave background will shift into radio waves, what the Sun would sound like if space was filled with air, and limits of our knowledge about planets through simulations. Visit James Davenport's YouTube channel here:https://www.youtube.com/channel/UCg6zx6fQG_Xo639TIjwJSZA00:45 When does the CMB turn into radio waves? 03:49 Sounds in space06:06 How much can we learn about planets through simulations? 15:45 How hard would it be to send a radio signal out in all directions? 22:02 Why can we find exoplanets, but not planets in the Solar System?