85: Lucy In The Sky With Trojans

We're going back to Jupiter again — or, near Jupiter anyway. Like the Lucy space probe we're zooming off to the 4th and 5th Lagrange points of Jupiter's orbit, where a whole pile of Trojan asteroids are camped. Emily explains Lucy's mission, how it got the name (it's complicated), and what we hope to learn about the solar system's origins from this Trojan multitude.