China’s Tiangong space station: what it is, what it’s for, and how to see it

The station orbits Earth every 91 minutes. Once you find the time of the station’s next pass over your location (at night – you won’t be able to see it in the daytime), check the direction it will be coming from, find yourself a dark spot away from bright lights, and look out for a tiny, fast-moving spark of light trailing across the heavens.