Interstellar Text Message Delivery Tracker

How long would a radio message take to arrive at another world — and how long for a reply?

📡 Delivery Tracker

One-way: 3m 2s

Round-trip: 6m 4s

Light-travel time only (299,792 km/s), with no relay or processing delays. Mars and Jupiter use their closest and farthest distances, which change as the planets orbit; Jupiter is shown at its closest approach to Earth.