That star is US! Everyone we know, will know, used to know, everything in history that happened, dinosaurs, wars, disasters, even a few football games (now that will really make the Superbowl look like nothing!), and everything else. All on that tiny dot. The moon is visible also in the image, over 40 years ago humans traveled to that other tiny dot just below the brighter one - never any farther than that. But then we see this photo taken from our rover sitting on Mars looking up the night sky.
Just another one of those photos that will make your brain go *ping!*.