A Chinese mega-constellation of communications satellites is facing serious delays that could jeopardise its ambitions to compete with SpaceX’s Starlink for valuable orbital resources.Only 90 satellites have been launched into low Earth orbit for the Qianfan broadband network – also known as the Thousand Sails Constellation or G60 Starlink – well short of the project’s goal of 648 by the end of this year.Under international regulations to prevent spectrum hoarding, satellite operators must deplo...