This montage shows examples of striking images of the solar system taken by Voyager 1 and 2 on their missions.NASA/JPL/Insider
The Voyager probes are pioneers of science, making it further into space than any other object made by humans.
Originally sent on a four-year mission to Jupiter and Saturn in 1977, the twin probes exceeded all expectations, and are still going 45 years later.
Among their achievements are the amazing photos of the solar they beamed back before the cameras were shut down.
But now, they face a terminal problem: their power is running out, and NASA scientists are starting to shut down even more instruments on board to conserve energy.
As they near the end of their mission, here are 18 images from Voyager that changed science: