Message to Voyager 1

Beta Beta: not reviewed yet, and there is no video for this one.

Press send and a radio signal leaves Earth at the speed of light. Watch how long it takes to reach the farthest spacecraft we have.

Distance from Earth
Loading.
One-way light time
Elapsed
Not sent yet
Remaining
Speed

The scale is stretched: each step right is ten times farther than the last, so the Moon and planets stay visible. The bar below shows the true share of the trip.

Positions: NASA JPL Horizons. Orbit sizes: NASA Planetary Fact Sheets. Speed of light: 299,792.458 km/s.