The Royal Observatory Greenwich is home to the Prime Meridian, the line that sets 0 degrees longitude on Earth. Starting in the late 1600s, astronomers used stellar transits to set the location of this line and establish time and navigational standards for maritime usage. Dr. Neal Miller and his girlfriend, Devashree, are seen here straddling the line with one foot in the East and one foot in the West! Your typical nerd poses for this sort of picture. A serious nerd poses for this sort of picture at local noon - note how their shadows align with the Meridian! The only thing that would have been nerdier is doing the same at local noon on the March Equinox, when the position of the Sun sets the zero point for Right Ascension in the astronomical coordinate system.