Earth' s City Lights Dades per gentilesa de Marc Imhoff del NASA GSFC i Christopher Elvidge del NOAA NGDC. Imatge per en Craig Mayhew i Robert Simmon, NASA GSFC.
Earth's City Lights Data courtesy Marc Imhoff of NASA GSFC and Christopher Elvidge of NOAA NGDC. Image by Craig Mayhew and Robert Simmon, NASA GSFC.