1. The Case of the Killer Rocks Aired: Sep 11, 2021 Earth is hit by 100 tons of rock from space every day. Most burn up in the at...
2. Death Ray Aired: Sep 18, 2021 When a massive star dies it can direct a blast of radiation that would oblite...
3. Cosmic Scrap Aired: Sep 25, 2021 More than 100 million pieces of small space debris are floating around the Ea...
4. Little Green Men Aired: Oct 2, 2021 Aliens could be lethal killers who want to invade and plunder our world. A te...
5. Dark Star Aired: Oct 9, 2021 Black holes were only theoretical until recently. And there are probably mill...
6. Big Sleep Aired: Oct 16, 2021 How will the universe end? Experts discuss the many possible ways that could ...