NASA's Voyager 1 closes in on a light-day in interstellar space for a new distance record

NASA's Voyager 1 closes in on a light-day in interstellar space for a new distance record ↗

NASA's Voyager 1 is about to become humanity's first object to reach one light-day from Earth. That's a mind-blowing distance of more than 16 billion miles. The spacecraft will reach the extraordinary milestone on Wednesday. At that point, its radio signals will take precisely 24 hours traveling at the speed of light to reach Earth. Its twin Voyager 2 is expected to reach one light-day in 2035.