This week on Looking Up, Tammy Terwelp, the General Manager of 91.5 KRCC, is the guest host. She gives us an idea of just how big the universe is. We’ve been airing the weekly Looking Up show for just under 4 years now, and during that time, listeners have heard Hal talk about lots of different and amazing things in the Colorado sky. We’ve learned about planets, galaxies, comets, stars, and more. But one thing I’ve wondered about is just how much stuff is out there? In other words, how big is