WEBVTT FILE

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Interstellar space is the
space'between the stars.'

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But that doesn't mean that'all
space is interstellar.'

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It's a bit more complicated
than that.

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At the center of the
solar system

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is our very own star, the Sun,

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that has eight planets
orbiting around it, including
our own.'

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And the Sun is also constantly
spewing out a stream of

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high-energy particles, which
we call the solar wind

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This wind forms a giant bubble
around our entire solar system.

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Other stars have similar
shells around them.'

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Other stars have similar
shells around them.'

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Interstellar space begins at
the edge of those star
bubbles,'

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which are much bigger than
these bubbles.'

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Interstellar space is hot and
cold at the same time.''

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The particles are moving
really fast.'

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Fast-moving particles means
high temperatures.'

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But get this - you can still
freeze to death.'

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The particles are so spread
out that they're not very good

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at transferring heat to your
body.'

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Inside the solar system, all
of the wind comes from the Sun

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And the Sun's bubble actually
blocks out the wind from other
stars.

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But out in interstellar space,
there's wind blowing from many
different stars

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and it all swirls together.'

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It's a glorious mix of
particles, energy and magnetic
fields -'

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totally unlike the kind of
environment we experience on
Earth.'

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In the 1970s, NASA launched
two space probes that are now'

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speeding through interstellar
space,

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beyond the bubble of our solar
system.'

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After a tour of our neighbor
planets,'

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Voyager 1 and Voyager 2 are
now the first human-made

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objects on an interstellar
adventure.'

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Another out-of-this-world
thing about interstellar space

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is that each of the Voyagers
is carrying a Golden Record on
its journey,

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with songs, sounds and
greetings from our home on
planet Earth.'

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So maybe one day they'll tell
the story of our world to
extraterrestrials.'

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It's pretty cool that we
humans now have a message in a
bottle

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all the way out there in
interstellar space.'

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Thanks for joining us with 5
Things About Interstellar
Space!

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And tune in to NASA Science
Live for more about
interstellar space.'