Just for the record, the firt four planets are correctly aligned, but Jupiter and Saturn are way out of place. The comet on the bank note is not where it really is and its hyperbolic orbit is off by about 90 degrees.

Still freaky, though.

I think the really freaky part is the day the artist picked, 9/26/11. That is the day when the comet is aligned with the earth and sun, but this time, inside the earth's orbit while closer to the earth than any other alignment. If the comet blocks the sunlight, we'll have three days of darkness.