Sublight Observer

The light you see from every spacecraft out there is already old. Voyager 1’s takes 23 hours to reach us. Perseverance’s, 15 minutes. I built a live map of the whole fleet, in light-time.

Perseverance sent home a new view of Jezero Crater (sol 1969). This light left Mars 14 h ago. sublight.observer/?c=perseve…

The most distant working spacecraft, Voyager 1, is 172 AU from Earth. Its signal takes 23 h 46 min to arrive. Nothing we know of it is happening now. sublight.observer/?c=voyager…

Perseverance sent home a new view of Jezero Crater (sol 1966). This light left Mars 1 days ago. sublight.observer/?c=perseve…

Right now, a signal to New Horizons takes 8 h 59 min to reach Earth. A round trip is 17 h 58 min. Everything we see of it is already that old. sublight.observer/?c=new-hor…

Right now, a signal to Voyager 2 takes 19 h 51 min to reach Earth. A round trip is 1 d 15 h. Everything we see of it is already that old. sublight.observer/?c=voyager…

17 robotic explorers are still working across the solar system tonight, from rovers on Mars to two probes in interstellar space. Their signals reach us between 1 s and 23 h 45 min old. sublight.observer/?view=flee…

Right now, a signal to Voyager 1 takes 23 h 45 min to reach Earth. A round trip is 1 d 23 h. Everything we see of it is already that old. sublight.observer/?c=voyager…

Perseverance sent home a new view of Jezero Crater (sol 1962). This light left Mars 13 h ago. sublight.observer/?c=perseve…

The most distant working spacecraft, Voyager 1, is 171 AU from Earth. Its signal takes 23 h 45 min to arrive. Nothing we know of it is happening now. sublight.observer/?c=voyager…

Perseverance sent home a new view of Jezero Crater (sol 1960). This light left Mars 12 h ago. sublight.observer/?c=perseve…

Right now, a signal to Curiosity takes 15 min 42 s to reach Earth. A round trip is 31 min 23 s. Everything we see of it is already that old. sublight.observer/#c/curiosi…