A Tail of Two Hemispheres . ... Two such views - from Cerro Paranal in Chile (left) and the Carnic Alps in Italy - are combined in this unique graphic that also outlines a perspective view of the comet's orbit (dotted line) and relative position of the Sun. ... In the diagram, the modeled location of dust grains released at approximately the same time relative to perihelion passage, synchrones , are shown as dashed lines. ... NASA Web Site Statements, Warnings, and Disclaimers . ...