Editing Galileo project (section)

===Arrival===
The ''Galileo'' orbiter's magnetometers reported that the spacecraft had encountered the bow shock of Jupiter's magnetosphere on November 16, 1995, when it was {{convert|15|e6km|e6mi|abbr=off|sp=us}} from Jupiter. The bow shock moved to and fro in response to solar wind gusts, and was therefore crossed multiple times between 16 and 26 November, by which time ''Galileo'' was {{convert|9|e6km|e6mi|abbr=off|sp=us}} from Jupiter.{{sfn|Meltzer|2007|pp=201–202}}

On December 7, 1995, the orbiter arrived in the Jovian system. That day it made a {{convert|32500|km|sp=us|adj=on}} flyby of Europa at 11:09 UTC, and then an {{convert|890|km|sp=us|adj=on}} flyby of Io at 15:46 UTC, using Io's gravity to reduce its speed, and thereby conserve propellant for use later in the mission. At 19:54 it made its closest approach to Jupiter. The orbiter's electronics had been heavily shielded against radiation, but the radiation surpassed expectations, and nearly exceeded the spacecraft's design limits. One of the navigational systems failed, but the backup took over. Most robotic spacecraft respond to failures by entering [[Safe mode (spacecraft)|safe mode]] and awaiting further instructions from Earth, but this was not possible for ''Galileo'' during the arrival sequence due to the great distance and consequent long turnaround time.{{sfn|Meltzer|2007|pp=201–202}}