Voyager 1 Has Been Flying Through Space for 48 Years — and It’s Only One Light-Day Away. Now Imagine How Far a Light-Year Really Is Launched in 1977, Voyager 1 has been traveling through space for 48 years, becoming the farthest human-made object from Earth. Despite its incredible speed—over 60,000 km/h (38,000 mph)—Voyager 1 is only about one light-day away from us. That single fact reveals just how unimaginably vast space truly is. A light-day is the distance light travels in one day: roughly

Galaxies on Instagram: "When NASA launched the Voyager 1 spacecraft in 1977, they included along with a golden record, meant to be the first impression of humanity. On this record included a series of over 100 pictures meant to depict human life on earth and the human race in general. Voyager 1 has reached almost one light day away from Earth, but still hasn’t encountered any other forms of life. How do you think aliens would interpret these images?"