Posted on: Tuesday, May 17th, 2022 | ID: #1233

This meter depicts readings by Voyager 1’s cosmic ray instrument. The instrument detects charged particles that dominate inside the bubble our sun blows around itself (green) and charged particles that dominate outside our solar bubble (orange). Data from this instrument suggested that Voyager 1 entered interstellar space on Aug. 25, 2012, when the inside particles (green) dipped closer to 0.0 and the outside particles (orange) rose to above 2.0.