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8. New International Space Station –$ 230 Billion
As the current International Space Station( ISS) nears the end of its functional life, plans for a new, state- of- the- art space station are underway. With an estimated$ 230 billion budget, this futuristic orbital platform will support advanced scientific exploration, marketable space trip, and transnational collaboration. Construction is anticipated to begin in the late 2020s, with full operations commencing in the 2030s, marking a new period in space disquisition.