This region, in which the solar wind dominates before it smashes into the surrounding galactic gas and dust, was supposed to look something like the shape of a comet: a region pushed inward on one side and streaming outward on the other. But a new NASA orbiting observatory designed to study this vast zone found something completely different.More details at MITnews.
Our sun's sphere of influence, according to a series of papers published in Science on Oct. 16 detailing the initial results from the Interstellar Boundary Explorer (IBEX) satellite, seems instead to be a bubble that is cinched at the waist by a vast ribbon as seen by energetic neutral atoms — atoms that are not electrically charged, but are moving very fast through space — that are glowing 10 times more brightly than anyone had expected from anything in this region called the heliosphere. The textbook descriptions of the heliosphere, according to Science's accompanying news story, will have to be entirely rewritten.
Heliosphere has different shape than expected
Posted on Saturday, Oct 17 2009 @ 11:00 CEST by Thomas De Maesschalck
New observations indicate the heliosphere, the Sun's sphere of influence, has a different shape than scientists had expected. It was believed that the heliosphere looked a bit lake a comet, but instead it appears to be a bubble that is cinched at the waist by a vast ribbon: