Way to go guys and gals over at JPL!
You've pulled out another success
with the aging Galileo spacecraft.

Like the successful DS1 comet flyby,
which I didn't expect, the Galileo
has pulled off a dangerous maneuver by flying through the "plume" material
from an Io volcano last August.
Admittedly, the plume material was
extremely tenuous [hard vacuum conditions], and microscopic:
each microscopic volcanic "snowflake" made up of a handful of sulfur-dioxide molecules clumped together...
yet there was always the statistically tiny possibility that an Ionian, volcanic, sulfur-dioxide "snowflake" the size of perhaps a pinhead could have struck and permanently disabled Galileo.

Way to go, Galileo! Hope you make it to 2003.

Jacob Samorodin