Today is the 40th anniversary of the launch of Voyager 1. Four decades later, both spacecraft survive, still producing science, still working on their interstellar missions. On the occasion of the anniversary, we revisit Carl Sagan's reflections on the significance of the Voyager missions.
Ravenna, population 1,400, sits on the plains of central Nebraska, and almost on the center line of the path of totality for the upcoming Great American Eclipse. Nebraska native Shane Pekny reports on how this small town is preparing for the big event.