What Alexa can learn from a heart attack on the moon

Minutes after the Apollo 15 lunar module blasted off the surface of the moon, Astronaut James Irwin’s heart began to stutter. Down at Mission Control, Dr. Charles Berry watched the astronaut’s EKG. He saw a series of rapid double beats with long pauses in between. If Irwin was on Earth, Dr. Berry said, “I’d have him in ICU being treated for a heart attack.”