Yesterday evening Central European Summer Time, the Netherlands Chinese Low-Frequency Explorer (NCLE) was launched on board the Chinese Queqiao satellite from Xichang in the south of China, to a position behind the Moon. It is the first Dutch scientific instrument ever to travel on a Chinese space mission, and it opens a new chapter in radio astronomy. The launch of the satellite is the starting point of the Chang’e-4 mission, later this year, the first mission to land on the far side of the Moon. The relay satellite is required for communication with the Earth.