👉Voyager 1 is still sending information back to Earth from interstellar space, now roughly 15.8 billion miles away. At that enormous distance, even signals traveling at the speed of light need over 22 hours to reach us. The spacecraft passed the heliopause in 2012, crossing the boundary where the Sun’s solar wind fades and the vast region between stars begins. This area, called the interstellar medium, contains thin gas, dust, and high-energy radiation. This achievement is important because Voy