If you’ve been keeping up with Voyager news, you know that the old spacecraft are gradually shutting down their instruments. NASA is managing power to prolong their mission and gather as much data as possible.
In March, both Voyager 1 and Voyager 2 turned off their cosmic ray subsystem and some low-energy particle sensors. Earlier, they had to disable the cameras, which were a huge power drain and provided stunning images of the planets.
Back in 1989, after Voyager 2 sent back the first close-up photos of Neptune, NASA decided to turn off its cameras. They needed that energy for other scientific instruments to study solar wind and interstellar space.
Voyager 1 hung on to its cameras a bit longer, capturing its final photos on February 14, 1990. Positioned about 6 billion kilometers (4 billion miles) from the Sun, it took a famous “Solar System Family Portrait,” the only image showing Venus, Earth, Jupiter, Saturn, Uranus, and Neptune together.
This portrait is a composite of 60 images stitched together. While it’s beautiful, some planets are missing. Mercury was too close to the Sun to capture, and Pluto was too far. Mars was hidden by sunlight scattered in the camera.
The standout of the portrait, however, is Earth. Carl Sagan famously called it the “Pale Blue Dot.” He wrote about this fragile planet and the vast universe surrounding it, emphasizing our duty to protect our home.
Recent statistics show how impactful this photo is. A survey indicated that around 80% of people who saw the “Pale Blue Dot” image felt a deep connection to Earth and a responsibility to care for it.
NASA states that only three spacecraft—Voyager 1, Voyager 2, and New Horizons—have made such observations from such distances, marking a unique moment in space exploration.
Now, could NASA ever turn those cameras back on? Unfortunately, it’s unlikely. The software needed for this task has been removed, and the computers that could process the images no longer exist. Even if they could reactivate the cameras, they may not function after years of exposure to extreme cold.
Despite this, Voyager missions continue to yield valuable science data. The spacecraft recently detected temperatures between 30,000-50,000 Kelvin at the edge of our Solar System, shedding light on its mysteries.
As we celebrate these incredible missions, we reflect on the insights they provide about our universe and our place in it.