Historical structures, like Alexander Graham Bell’s residence in Nova Scotia, are often transformed into museums or national heritage sites to safeguard their legacy for future generations. However, what about preserving a colossal building, the size of a football field, orbiting 400 kilometers above Earth?
NASA’s official strategy involves deorbiting the International Space Station (ISS) when its operational lifespan ends. This means intentionally sending it on a controlled descent back into Earth’s atmosphere, where it will ultimately crash in a remote ocean location.
Recently, certain U.S. Government members proposed legislation urging NASA to reassess this plan and explore the possibility of maintaining the ISS in low Earth orbit. Since its inception in 2000, the ISS has hosted numerous astronauts from the U.S., Russia, Canada, Europe, and Japan. Constructed through multiple space shuttle and Russian launches, the ISS, weighing over 400 metric tonnes, stands as the largest scientific laboratory ever deployed into space.
In January 2022, NASA disclosed its plan to retire the space station in 2030 and initiate the deorbiting process in 2031. The current proposal involves utilizing a SpaceX rocket to guide the ISS on a trajectory that will lead to its disintegration over the Pacific Ocean, mirroring the fate of its predecessor, the Russian Space Station MIR.
However, not everyone is in favor of this plan. U.S. Rep. George Whitesides submitted a motion to investigate alternative options before committing the ISS to destruction, emphasizing its significance as a remarkable engineering feat. One challenge is that the ISS cannot be left unattended for long periods due to the Earth’s atmosphere gradually causing it to descend out of orbit.
Boosting the ISS to a higher orbit for an extended operational life would pose technical and safety challenges, including the risk of catastrophic collisions with space debris. Despite efforts to seek private entities to take over the ISS, no viable proposals have emerged. NASA’s focus may shift towards lunar and Martian exploration, but orbiting space stations are likely to persist, with China’s Tiangong already operational and private companies planning their own space stations.
While Rep. Whitesides’ proposal is still pending approval, the likelihood remains that the ISS, after three decades of service and a substantial cost of $100 billion US, will meet its end in the Earth’s atmosphere and ocean depths. Nonetheless, further exploration of alternative preservation methods may offer a different outcome.