(CNN) One of the Earth's longest-flying spacecraft has detected a "persistent hum" beyond our solar system, according to a new study. NASA's Voyager 1 launched on September 5 1977, from Cape Canaveral, Florida, aboard a Titan-Centaur rocket, just weeks after its sister craft, Voyager 2. A Cornell University-led team studied data transmitted from the spacecraft, sent from 14 billion miles away and discovered the interstellar gas emissions. This artist's illustration depicts NASA's Voyager 1 spacecraft entering interstellar space. "We're detecting the faint, persistent hum of interstellar gas."

Source: CNN May 11, 2021 14:37 UTC