Detailed true-colour image of the entire Earth, showing cloud cover over two days. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-colour mosaic of every square kilometre (.386 square mile) of our planet. These images are freely available to educators, scientists, museums, and the public. Much of the information contained in this image came from a single remote-sensing device-NASA's Moderate Resolution Imaging Spectroradiometer, or MODIS.