Share the news to friends and circles of friends with wechat scanning code QR code < / P > < p > on August 11. On the evening of August 10 local time, an antaris rocket carrying the heaviest cargo spacecraft in history "Swan" was launched from Virginia to transport more than 4 tons of payload to the international space station < p > the mission, named ng-16, is the 15th replenishment mission to the international space station by Northrop Grumman since 2014. The launch on that day was once blocked by the instability of the hull and the problem of helium valve, but with the efforts of the technical team, the rocket was finally launched at 6:01 p.m. Eastern time, with only the last five minutes left until the end of the launch window < p > the "Swan" cargo spacecraft has transported 3719 kilograms of scientific equipment and materials for the astronauts of the international space station, as well as new solar panels and other equipment of the space station, with a payload of more than 4 tons < p > three minutes after the rocket took off, the first stage booster separated from the upper stage. Soon after, the payload fairing fell off, and the "Swan" cargo spacecraft was powered by the upper stage and successfully entered the preliminary orbit. The spacecraft will arrive at the international space station in two days and then dock in place with the help of a robotic arm < p > < p > NASA astronaut Megan McArthur will capture the spacecraft at about 6:10 a.m. EDT on August 12. The spacecraft will stay at the international space station for about three months, then leave the station and burn up when re-entering the earth's atmosphere < p > it is reported that the spaceship carries a brain free and nervous system organism called "slime fungus". Scientists want to study how they move, communicate and eat in space. The spacecraft will also send human muscle cells to the space station. Researchers hope to cultivate muscle fibers that can be used to treat related diseases in space < p > in addition, the "Swan" cargo spacecraft is equipped with a new carbon dioxide filter, new 3D printer accessories and related 3D printing materials（ Chen Chen)