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Solar System Is Dented: Voyager

Intrepid spacecraft finds strange bulges in the heliosphere

By Katherine Thompson,  Newser Staff

Posted Dec 11, 2007 9:18 AM CST

(Newser) – Far out in space, a violent boundary zone marks the point where our solar system ends and outer space begins. NASA's Voyager 2 has now confirmed what its sister ship indicated: that this region is squashed and uneven, Space.com reports. This shock wave "sloshes back and forth like surf on a beach," says a scientist. "There's something outside pushing in."

This interstellar crest doesn't behave like a normal shock wave, however. Instead of heating up as it encounters obstacles, the wave seems to be transmitting its energy to cosmic ray particles, shooting them off in all directions. The Voyager spacecraft, both launched in 1977 and still chugging away, will soon exit our solar system entirely.

An artist's rendition of the solar system and the boundary region.
An artist's rendition of the solar system and the boundary region.   (NASA)
An artist rendition released by the European Space Agency on Wednesday, Nov. 28, 2007 shows the main bodies of the solar system, the Sun, Mercury, Venus, the Earth, from left in foreground, Uranus, Neptune, Saturn, Jupiter and Mars, from left in background. Far beyond these orbits, the edges of the...
An artist rendition released by the European Space Agency on Wednesday, Nov. 28, 2007 shows the main bodies of the solar system, the Sun, Mercury, Venus, the Earth, from left in foreground, Uranus, Neptune,...   (Associated Press)
This image provided by NASA shows a rare, infrared view of a developing star and its flaring jets taken by NASA's Spitzer Space Telescope showing us what our own solar system might have looked like billions of years ago. Where the solar system meets the rest of the Milky Way,...
This image provided by NASA shows a rare, infrared view of a developing star and its flaring jets taken by NASA's Spitzer Space Telescope showing us what our own solar system might have looked like billions...   (Associated Press)
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