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The Juno spacecraft
will encounter

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some of the most intense
radiation in the solar system.

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(trumpets)

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So how do we protect it?

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(clang)

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(♪)

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Jupiter has a very
strong magnetic field,

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14 times stronger than the
Earth's magnetic field.

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It's as though if we
cut the planet in half,

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we'd find a giant magnet inside.

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Like this one.

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(bell rings)

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You see, here's the
magnetic-field pattern created

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by these little pieces of iron.

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But Jupiter doesn't
have a magnet inside.

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Instead, it probably has a core

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made of hydrogen, squeezed down

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to such high pressure
that it acts like a metal.

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And when it churns and
swirls, it produces this

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super-strong magnetic
field that draws particles

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from the sun at such
high speeds that they

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produce the radiation equivalent
of 100,000,000 X-rays.

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(zapping sound)

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Now that radiation would
destroy the electronics

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on board the Juno spacecraft.

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(zapping and explosion sounds)

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So what we do is we
enclose Juno's electronics

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in a metal vault
like this one,

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(banging on metal)

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so our electronics can survive.

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(cheering)

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Now the real vault on
board Juno doesn't look

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like a cookie tin.

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It looks more like this.

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(bell rings)

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And it's made of
titanium, like this.

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Very lightweight
and strong metal.