Helping From Other
If planet A is far away from us for several millions of light years (Pic 1)....The natural light that we see from the planet A is became a past. (Black Arrow)
How to see the present or closely?
We will see the light or signal that is nearly present as possible as if the planet A has a device such as The Delay Light Machine there. (Green Square in Pic 2)
And this Delay Light Machine will be a part of the device that used to Signals Sending.
Related Link
Fastest Travel
Meet Your Self
Delay Light & Seeing
Helping From Other
The Character of Signal
