NASA Voyager: ‘Tsunami Wave’ Still Flies Through Interstellar Space

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SPACE TRAVEL

NASA Voyager: ‘Tsunami Wave’ Still Flies Through Interstellar Space
by Staff Writers
Pasadena CA (JPL) Dec 16, 2014

View a video on the research here.

The “tsunami wave” that NASA’s Voyager 1 spacecraft began experiencing earlier this year is still propagating outward, according to new results. It is the longest-lasting shock wave that researchers have seen in interstellar space.

“Most people would have thought the interstellar medium would have been smooth and quiet. But these shock waves seem to be more common than we thought,” said Don Gurnett, professor of physics at the University of Iowa in Iowa City. Gurnett presented the new data Monday, Dec. 15 at the American Geophysical Union meeting in San Francisco.

A “tsunami wave” occurs when the sun emits a coronal mass ejection, throwing out a magnetic cloud of plasma from its surface. This generates a wave of pressure. When the wave runs into…

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