It takes more than eight minutes for the sunlight to reach our atmosphere, which means the light, due to which we are able to see now in our present has actually started its travel in the past. It is this light which reflects the objects, make us able to see that object and the amount of light passed on that objects is directly proportional to the color which we see.
So, this article which you are reading now, is visible to you only after some time as the light emitted from the screen reflects the eyes and neural signals are sent to the visual cortex of the brain and then forms an image in the brain which is making you see. Of course, it doesn't take much time but just few milliseconds. That means whatever we see now is already past. We are always seeing the past even though by a millisecond.
Thank the almighty for giving such a fast processing device. Well.. many of the stars which are millions of light years away from us are actually seen by us in this moment might have evolved into a white dwarf and gone supernova!!