NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
The Ulysses solar polar explorer shortly after release from Space Shuttle Discovery on Mission STS-41. Ulysses was boosted by a two-stage motor on its way to a close encounter with Jupiter, using that planet's gravitational field to alter the craft's trajectory away from the ecliptic plane and back toward the sun. Initially Ulysses will survey the southern polar regions of the Sun in June 1994 before crossing the Sun's equator in Early 1995 and traversing the northern polar region in June 1995. The closest approach will be at 120 million miles. Ulysses carries instruments for observing the solar surface and detecting magnetic fields and solar particles.
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