Blog Post Image: How Do We Know When Voyager Reaches Interstellar Space?

You Are Here, Voyager: This artist’s concept puts huge solar system distances in perspective. The scale bar is measured in astronomical units (AU), with each set distance beyond 1 AU representing 10 times the previous distance. Each AU is equal to the distance from the sun to the Earth. It took from 1977 to 2013 for Voyager 1 to reach the edge of interstellar space. Image Credit: NASA/JPL-Caltech (Click image to enlarge)

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