(Image credit: NASA) All right, everyone — we can all breathe a sigh of relief. NASA's Voyager 1 spacecraft is fully operational once more, with all four science instruments returning usable data to Earth.The problems began in November 2023, when Voyager 1 lost its ability to "speak" with us. More specifically, it started sending to Earth unintelligible data instead of its normal 0s and 1s of binary code. Of course, Voyager 1 is 46 years old — ancient for a spacecraft — so it wasn't entirely a s...