This image was taken from Voyager, nearly 30 years ago. Back then, just eight years after we had first walked on the moon, it seemed as though we'd be seeing pics of man walking on Mars by now. Things have really stalled in that department, though. It's hard to imagine looking back at earth from this vantage. I'm reminded of a road trip, where a landmark like Mt. Rainier fades from view behind you, and new landmarks emerge in front of you.
