Voyager 1 crossed into interstellar space in 2012 and Voyager 2 followed in 2018, yet both encountered the edge of the heliosphere at almost the same distance from the Sun—121.6 and roughly 119 astronomical units—even though they crossed in different dire
The two Voyagers left the Sun's bubble six years apart, in different directions and at opposite ends of the solar cycle, yet found its edge at nearly the same distance. Scientists are not sure why…
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