Ulysses:
Ulysses was the first mission to survey the space environment above and below the poles of the
Sun's . The reams of data Ulysses returned over its 17-year life forever changed the way scientists view our star and its effects on the solar system.
The spacecraft's six-year orbits over the Sun's poles allowed scientists to observe our star from an unprecedented angle during both calm and turbulent periods. Ulysses made the first direct measurements of interstellar dust particles and interstellar helium atoms in the solar system and the discovery that the magnetic field leaving the sun is balanced across latitudes. The observations redefined the way scientists think about space weather.
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