  We suggest an analogy between energetic particle and magnetic field
observations made by the Voyager 1 spacecraft in the distant heliosheath at 122
AU in August 2012, and those made in the distant geomagnetic tail by the ISEE 3
spacecraft in 1982-1983, despite large differences in the time and distance
scales. The analogy suggests that in August, 2012, Voyager 1 may not have moved
from the anomalous cosmic ray (ACR)-dominated heliosheath into the interstellar
medium but into a region equivalent to the "lobes" of the geomagnetic tail,
composed of heliospheric field lines which have reconnected with the
interstellar medium beyond the spacecraft and so are open to the entry of
cosmic rays, while heliospheric particles (e.g., ACRs) are free to escape, and
which maintain a ~Parker spiral configuration. The heliopause, analogous to the
magnetopause forming the outer boundary of the lobes, may then lie beyond this
so-called "heliocliff". Even if this analogy is incorrect, the remarkable
similarities between the energetic particle and magnetic field observations in
these very different regions are worth noting.
