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(music throughout)

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The Lucy mission is a planetary mission

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to the Trojan asteroids
 that are around Jupiter.

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It's going to survey actually
 a total of eight targets, seven asteroids

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around Jupiter and one asteroid
 in the main asteroid belt.

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Once you know where you're going and
 the type of science that you want to take.

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One of the things that you start looking
 at is the spacecraft.

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What size spacecraft, where is it going,
 how much power does it need to carry?

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Does it need solar rays,
 what type of solar arrays?

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What type of vehicle is going
 to be used to launch it into space.

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So that dictates
 how much mass you can carry.

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And one of the things I do as a project
 manager is to assemble a team

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of scientists and engineers
 and technicians and business

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people to design that overall spacecraft
 to achieve your mission.

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In designing the
 spacecraft, you are always thinking

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about what type of environment
 is it going to be subjected to.

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Is it going to orbit around Earth?

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Is it going into deep space?

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Is it going to Mars? 

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Is it going close to the Sun? 

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And so as engineers, one of the things
 that you're thinking about

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very early on is how can you design this
 system and test the system

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in order to verify and convince yourself
 that it's going to survive in space.

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And as part of that, it goes through
 a very rigorous test program.

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And so we call it shaking and baking.

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And so we actually put it
 through what we call

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a thermal vac chamber in which we simulate
 the space environment.

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You also put it on 

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what we call a vibe table
 in which we vibrate it, so we shake it.

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And one of the important things 

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that you have to do in order
 to be convinced that it's going to survive

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is to make sure that the environment
 in which you're testing it in

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the simulated environment is harsher
 than what it's going to see in space.

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So once you subject the spacecraft
 or that instrument to that environment,

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then you can have confidence 

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that it's going to last the lifetime
 that it's been designed for.