NANOSATELLITE satellite of very small size with respect to a normal one, of the order of tens of centimeters wide and long, even more than a microsatellite. The size varies from that of a breadbasket (e.g., tens of centimeters on each side and a few kilograms in weight) to that of a school bus (several meters on each side and thousands of kilos), says Barnhart, who is dedicated to designing satellites.