Ariane 5 and ATV Edoardo Amaldi on the launch pad, 21 March 2012, in Kourou, French Guiana.
Weighing in at 19 714 kg, including 6596 kg of fuel, air, oxygen, scientific equipment, spare parts and crew supplies, ATV-3 is the heaviest payload ever lofted by Ariane 5. Including the launcher itself, 777 tonnes rose up off the pad.