Huddle around the radio, all. TED Radio Hour’s second season is under way and episode two, “Peering into Space” premieres today. Host Guy Raz says that this episode may even be his favorite created so far. In an interview with the TED Blog, he said, “It totally changed my world … I think people who haven’t taken the time to look at the stars recently are going to be amazed by what they hear. You look out at the brightest star in the sky — and you are looking at the past in real time. That idea to me is so beautiful.”

Gazing up at the night sky is always both humbling and thrilling. In this episode of TED Radio Hour, you’ll hear from speakers who share a sense of wonder and curiosity about our place in the universe. Phil Plait breaks down how we can defend Earth from an asteroid. Jill Tarter of the SETI Institute explains why it’s crucial for humans here on earth to continue searching for sentient beings in the cosmos. And Cosmologist Brian Greene unravels the strange tale of dark matter and why our universe may be one of the many in the “multiverse.”

Check your local NPR schedule to find out when the show airs today, or listen via NPR’s website »

Or head to iTunes where the podcast is available now »