What this is

Voyager 1 launched on 5 September 1977 and is still transmitting. On 18 November 2026 at 02:16:07 PST it becomes the first human-made object exactly one light-day from Earth — 16,094,799,096 miles, or 25,902,068,356 kilometres.

Type a sentence here and the site shows you, in your own local time, the moment it would reach the spacecraft if it left Earth at the speed of light right now. That is currently a little under 24 hours. Nothing is transmitted: the distances and times are real, the message is yours alone.

Say something to Voyager 1.

#TalkToVoyager

Your message reaches Voyager 1

Flying since 1977. Nobody is reading.

#TalkToVoyager

Nothing is actually sent. The distances and times are real; the message is yours alone. NASA’s Voyager Mission