By 2040, humanity may establish its first permanent space colonies at Lagrange points, gravitational sweet spots where natural stability enables long-term habitation with minimal fuel costs, transforming us into a truly multi-planetary species.
Jupiter's Trojan asteroids are ancient space rocks trapped in gravitational sweet spots for over 4 billion years, preserving pristine materials from the solar system's formation. NASA's Lucy mission will visit eight of these objects by 2033, revealing how planetary migration shaped our cosmic neighborhood and possibly delivered the building blocks of life to Earth.
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