The Earth is about 12% the luminosity from Voyager's perspective now as it was in 1990; that camera might still be able to image it, at least on its own. But a

The Earth is about 12% the luminosity from Voyager's perspective now as it was in 1990; that camera might still be able to image it, at least on its own. But a bigger problem might be the Earth getting lost in the Sun. When the image was taken in 1990, the Earth was something like 1.4 degrees from the Sun at most, and that was close enough for the nearby Sun to cause the imaging artifact that shows up as the apparent sunbeam the pale blue dot is suspended in; at the same time, NASA said they couldn't image Mercury because it was too close to the Sun, when Mercury was about one half degree away from the Sun at most. The Earth is now about one half degree away from the Sun at most, at Voyager's current distance (assuming my back-of-the-envelope math is correct for all of the above).