Voyager spacecraft detects “persistent hum” beyond our solar system
"It's very faint and monotone"
Voyager 2: NASA finally gets in contact with 50-year-old spacecraft from 12 billion miles away
"This test communication with Voyager 2 definitely tells us that things are on track with the work we're doing"
NASA launched Voyager crafts nearly 40 years ago, they’re still transmitting data
Even though the crafts were built in the 1970s they were built to last with systems that can adjust when necessary