The world’s largest plane recently made its first flight in the US. The plane, called Roc, is made by a US company. It flew in the air for about two hours. The plane has two fuselages (机身). It is 73 meters long and has a wingspan (翼展) of 117 meters. That is even longer than a soccer field! There are six engines (引擎) and 28 wheels (轮子) under the plane. In the future, the plane will help to send satellites (卫星) into space.