Overview
- China will add a roughly 20-ton multifunctional module plus two experiment modules to convert Tiangong from a three-module T shape into a six-module "double-T," roughly doubling the station's mass from about 90 tons to 180 tons.
- The Xuntian space telescope, scheduled for launch in 2027, carries a two-meter mirror and a 2.5-billion-pixel camera with a field of view far larger than Hubble's and will operate in a matching orbit so it can periodically dock with Tiangong for servicing.
- Officials say the new modules and docking ports aim to prevent 'queuing' for berths and provide more emergency buffer space as mission tempo and science demands rise.
- China is developing lower-cost cargo vehicles and a next-generation Mengzhou crew capsule that could carry up to seven people to support more frequent crew rotations and resupply flights.
- With NASA planning a controlled ISS deorbit around 2030–2031, analysts note that Tiangong's growth and transport upgrades could leave it as the largest continuously crewed government-operated outpost in low Earth orbit during the post-ISS transition, reshaping where human-tended research is done.