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Hi, everyone, I'm Thomas Pesquet, and I'm

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with my favorite astronaut, Shane
 Kimbrough, up here on the space station.

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Today, we're going to talk about
 a very cool new NASA mission called DART.

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Can you tell us, and tell me a little bit
 more about what is NASA's DART mission

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and what does NASA's
 DART mission stand for?

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OK. Yeah, so DART is NASA's
 first planetary defense test.

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So we're going to
 we're going to try to do something

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we've never done before with a spacecraft.

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DART stands for Double Asteroid
 Redirection Test,

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so a nice acronym,
 NASA does like acronyms.

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DART is another one.

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And now the purpose of this spacecraft
 in this mission, it has one purpose,

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and that's the crash itself
 into an asteroid

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and try to redirect it
 or try to move it into a different orbit.

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So today, Shane,

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we're going to demonstrate

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some of those principles
 that you laid out before.

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But can you tell us
 exactly how we're going to do that?

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Well, I can try.

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We're going to. It's a first time for us,
 but we're going to try

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to demonstrate this,
 this asteroid kinetic deflection method,

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which is really the moment that that
 that spacecraft crashes into the asteroid.

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So we're going to use microgravity up here
 because we have that all the time

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and we're going to try to show
 you kind of how this is going to work

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when the asteroid is hit
 by this spacecraft

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called DART. So here we go.

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So what I'll do,

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Shane's going to be the asteroid
 and I'm going to be the NASA dark mission.

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And this CTB more exactly,
 is going to be a spacecraft.

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I'm going to try to throw

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it and we look at the effect of that
 mass coming at him

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and the kinetic energy transfer
 from the CTB to Shane.

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Shane will be perfectly stable.

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It's not an easy task. You're ready?

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All right. Here it comes.

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I've redirected Shane successfully.

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Yeah, pretty good.

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A while ago, we got out the door
 and we got some new solar arrays

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here on space station,
 and so the same technology

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we have here now in the space
 station is going to be used to power

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the DART mission
 on its way to this asteroid.

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IROSA, in case you didn't know,
 but you knew it stands for ISIS,

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rolled out solar arrays,

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so we got a chance to go outside
 and install the very first two of these

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new IROSAs or roll out
 solar arrays on the very end of the space

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station out on the port side.

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These are different because for one,
 they're much lighter and smaller.

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To me, they look very fragile.

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We're picking them up and moving them,
 but they're rolled up.

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So they when they launch,
 they're kind of rolled up into a compact

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cylinder, which is great
 for launch conditions.

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And then once they get up
 on the space station or in space

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for a satellite or something, they can
 then roll these things out to be useful.

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And so the same technology we have here
 now in the space station, it's