Knot in the ribbon at the edge of the solar system 'unties'

Knot in the ribbon at the edge of the solar system 'unties': "ScienceDaily (Oct. 1, 2010) — The unusual 'knot' in the bright, narrow ribbon of neutral atoms emanating in from the boundary between our solar system and interstellar space appears to have 'untied,' according to a paper published online in the Journal of Geophysical Research."