Calculation
From Pic.1, the red arrow is the natural light that we see, which is always the light from the past.
And all we have to do is calculating its position when it moves as close as to the earth. And must be in a position that is not obscured by the sun
Suppose that in the round 3rd, the earth and planet A will be closely to overlap ( next 30 years) and most suitable to see planet A (Pic.2)
planet A will release A Green Arrow that created from the delay light machine here. (Pic.3)
At this position we can see the signal from the planet A (Green Arrow) even the planet A is gone. (Pic.4)
Related Link
The 2 Dimension
Past Light
The 3 Dimension
Calculation
Position
