Project officials report light-sensing instrument aboard NASA’s Voyager 1, that had difficulty during encounter with the planet Jupiter March 5th, has been confirmed as no longer being able to record useful data. Tests conducted last week indicate that the light sensitivity of the instrument, called photopolarimeter, has almost reached zero. The photopolarimetry is one of eleven science experiments conducted by the Voyager spacecraft and is designed to detect surface and atmospheric chemicals on Jupiter and Saturn and their moons. Data was received from an identical instrument aboard Voyager 2…