Could we realistically see ancient images of the earth from reflected light? We know the speed of light and we know the distance of the earth from the sun. Do we have the knowledge to predict the movements of light that we could take a reflection off the earth that shines on a distant object in space and reflects back to us (our devices on Earth) or to a probe or something so we could we see the earth as it used to be? If we did, would we be able to see something such as continential structure or the sea level maybe a few million years ago? Or perhaps something closer like a thousand years ago or even one? Then, if we could do that could we map out past climate changes?