HEAD SCRATCHER

It's true that we can look up into the night sky and see starlight from millions of years ago, only now reaching us from the long, cold journey through space and time. It's also true that a lot of these stars may have already ended their existence, blowing apart in massive supernova events, scattering their stardust over the galaxies. We are made from stardust. The very atoms that are our basic building blocks were forged in such events. It is therefore safe to assume that when we turn our heads to the heavens, look upon images of long-dead stars still shining brightly in the sky, we could simultaneously be looking at parts of ourselves that are now down here on Earth looking starward. It's quite the head-scratcher.