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Going… Going… Gone! Voyager I Enters Interstellar Space

September 13, 2013

Research & Collections

About one year ago, I wrote a blog commemorating the 35th anniversary of the launch of Voyager I, the second of the twin Voyager spacecraft to be launched to deep space; Voyager II launched 16 days earlier. These amazing spacecraft — the fastest ever made — have been rocketing toward the end of the solar system at roughly 1 million miles per day for more than 35 years, and scientists have been eagerly awaiting signals of their departure from the edge of the solar system where solar wind and plasma have dominant influence (called the heliopause). Voyagers’ main mission was to explore the outer planets, which they did with great success, taking some of the first high-resolution images of the planets and their moons, and inspiring Carl Sagan to use Voyager I to take a photo of Earth from a distance of 3.7 billion miles, leading to his profound speech…

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