An unmanned Cygnus cargo spacecraft loaded with 3,700 kilograms of food for the crew and materials for scientific experiments arrived at the International Space Station (ISS) on Wednesday as scheduled, according to US space agency NASA. The station captured the freighter arriving and NASA shared the video on Twitter. A solar array on the Cygnus had not deployed as intended, but the mission still succeeded. The spacecraft was launched on Monday from the US state of Virginia. An earlier launch time set for Sunday was postponed due to a fire alarm at the control centre of the manufacturer Northro…