The European Space Agency’s Philae probe made a spectacular, bouncy landing on Comet 67P last fall—but then fell into a coma after it ran out of power, its solar panels in the shade of a cliff. But last weekend, it woke up and transmitted housekeeping data back to its partner spacecraft, Rosetta, in orbit around the comet. In this episode of Good Thing/Bad Thing, Tariq Malik of Space.com talks about the excitement and the potential pitfalls of this unexpected awakening.

And The Verge science reporter Arielle Duhaime-Ross helps us unravel a decades-old scientific question: Why tests of a chlamydia vaccine in the 1960s made certain people more susceptible to this sexually transmitted infection. Also making the cut for her top science news stories of the week are the discovery of 35 new groups of bacteria in Colorado’s groundwater and a new treatment for malaria.