Title: The New Engine
Finished: June 20, 2021
The future (fictional) ISS is getting propulsion upgrade. A VASIMR (Variable Specific Impulse Magnetoplasma Rocket) plasma thruster will be installed at the end of Zvevda module. This new propulsion can bring ISS ascending to higher orbit, thus reduce the atmospheric drag of the low orbit. Higher orbit means easier for spacecraft departed from ISS to escape earth orbit, assumed ISS being used as starting point for inter-planetary travel.