science π°οΈ Voyager 1 keeps going, losing power slowly
Voyager 1 is currently over 15.8 billion miles away from Earth, transmitting from interstellar space. The probe was launched on September 5, 1977, from Cape Canaveral carrying a massive 815 kilograms payload. It is expected to reach one light-day away on November 18, 2026, where signals take almost a full day to travel. The mission relies on RTGs, which lose about four watts of electrical power every year as plutonium decays. Engineers are constantly conserving power to keep the spacecraft functioning through the 2030s. π