The Golden Record is still flying

In 1977, both Voyager probes launched carrying a gold-plated copper disc: greetings in 55 languages, music from Bach to Chuck Berry, and the sounds of Earth.

A message in a bottle, thrown into the cosmic ocean.

Nearly five decades later, the probes are in interstellar space, still whispering back to us across billions of kilometres with less power than a fridge light bulb.