WEBVTT

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UVS stands for Ultra-Violet Spectrograph.

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It's an instrument that looks at ultraviolet light

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light that you can't see with your eyes,

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it's too short a wavelength

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but it also breaks that light up into different colors,

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much like a prism would break up white light into a rainbow.

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It has two components to it, actually.

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One is the sensor which is sort of a telescope,

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plus a spectrograph, side by side.

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And all the electronics, except for what need to be right at the sensor,

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are put in another box which is deep inside a vault,

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which on Juno, protects all the sensitive electronics

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from the radiation at Jupiter.

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Jupiter has some similarity to Earth.

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The Earth has northern lights -- auroras, and they're spectacular to watch.

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Jupiter's auroras are like a thousand times bigger.

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So the auroral oval on Jupiter is bigger than the entire Earth

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and much, much, more powerful.

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And it's always on.

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But it's much easier to look at it

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in ultraviolet wavelengths 'cause we can see it on the day side as well.

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When we see light from those different colors and the UV

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they tell us different hinges about Jupiter's upper atmosphere

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and the particles that are causing the auroras to happen.

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We'll be able to contrast how auroras work at Earth

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with how they work at Jupiter.

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And there are many differences we already know

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but there's a lot of things we've never been able to see at Jupiter

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that we can see with Juno once we get there.