It was just after midnight at mission control center at NASA’s Jet Propulsion Laboratory, and Carl Sagan was exuberant. The Voyager 2 spacecraft had just completed its decade-long mission by making its closest pass to Neptune, before continuing on into interstellar space. It was the first—and so far only—spacecraft to visit the mysterious blue ice giant lurking at the edge of the solar system.
Learn about your ad choices:
dovetail.prx.org/ad-choices
