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You're with the BBC. You know, welcome to Jupiter.

The brilliant Juno Mission to Jupiter.

This is the sort of thing we've come to expect from the rocket

scientists at NASA. But for a while, in the last decade of the 20th century, that just wasn't

the case. I'm Dr. Kevin Fong and this is the second program in our series

The Truth about Success and Failure in Medicine in which I'm looking out across

the boundaries between the medical profession and other industries for valuable lessons

that might be of use to us all.

This program tells us about how NASA's Jet Propulsion Laboratory endured a decade of repeated failure and then recovered,

rose from the ashes of defeat to deliver one of the most spectacular missions in the history

of planetary exploration.

Mars Science Laboratory.

Thrusters have been re-enabled, we will control our attitude on shoots.

We are decelerating.

In some sense, the failure or success of the mission is already preordained.

It's already happened.

We're down to 90 meters per second at an altitude of 6.5 kilometers in setting.

If there is a mistake and there will be mistakes,

...