We have the blueprints to move the Sun, but no materials.
In short: Moving a star is theoretically possible, but we are currently blocked by the physical limits of matter. This video examines the engineering hurdles of the most ambitious propulsion concepts ever proposed.
The video explores two primary concepts for stellar engines: the Shkadov Thruster and the Caplan Thruster. The Shkadov Thruster would utilize a massive mirror to reflect the Sun's own light, creating a slow push through space. In contrast, the Caplan Thruster is a more aggressive fusion engine designed to consume solar material as fuel.
Despite having the equations and designs, humanity faces a 'brutal problem' regarding materials science. Constructing these engines requires materials capable of withstanding extreme solar temperatures and achieving impossible strength-to-weight ratios across astronomical distances. The barrier to interstellar migration isn't a lack of energy or physics, but the current limitations of what matter can do.
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Sources
- Summary by Intellect · source: Why Haven't We Built a Star Engine Yet?
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