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(music)

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(rattle)

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(Narrator) Sometimes a great discovery is a new perspective on the universe we thought we knew.

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As the Voyager spacecrafts near the edge of our Suns reach. Scientists

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are getting a new look at the expanse
and shape of the solar system.

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(music)

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Over 30 years ago Voyager 1 and 2 set out for Jupiter Saturn and beyond.

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(rocket engins)

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Now as the twin spacecrafts explored the
outer reaches some nine billion miles

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away from Earth. They have crossed the
heliosphere, the bubble of supersonic solar wind

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(music)

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However when Voyager 2 crossed this
boundary much closer to the Sun than

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expected. We received a picture of a
squashed heliosphere rather than a round bubble.

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The squashed heliosphere helps
scientists build up a picture of how the

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Sun interacts with the space outside of
our solar system. The recently launched

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IBEX or Interstellar Boundary Explorer
will further the study of how the solar

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wind interacts with the cold gas between
stars.

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(music)