Voyager

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5/26-5/25/2005 Space (universetoday). Space. The Final Frontier. These are the Voyagers from Our Earth Ship Enterprise. NASA: Voyager 1 Has Entered the Heliosheath.

NASA's Voyager 1 spacecraft launched in 1977 is now 8.7 billion miles from the Sun. It has traveled so far in our Solar System that it's reached the heliosheath. This is an area just past the termination shock region, where the solar wind crashes into the thin interstellar gas of the galaxy. It was difficult to detect exactly when Voyager 1 passed through the termination shock and into the heliosheath, because we have no data about interstellar space yet, just calculations."

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"... The termination shock is where the solar wind, a thin stream of electrically charged gas blowing continuously outward from the Sun, is slowed by pressure from gas between the stars. At the termination shock, the solar wind slows abruptly from a speed that ranges from 700,000 to 1.5 million miles per hour and becomes denser and hotter. The consensus of the team is that Voyager 1, at approximately 8.7 billion miles from the Sun, has at last entered the heliosheath, the region beyond the termination shock."

Hear the sounds of Voyager at uiowa space audio.

"Voyager 1 is 94 astronomical units (AU) from the Sun and moving away at 3.5 AU per year, while Voyage 2 is about 76 AU and traveling at about 3.3 AU per year. An AU is the average distance between the Earth and the Sun (approximately 150 million kms or 93 million miles). " -yahoonews

 

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