Cook Islands

Varies by issue (mid-2010s series)

This innovative silver coin issued for the Cook Islands explores the scientific concept of the space–time continuum, a fundamental principle in modern physics describing the unified nature of space and time. The coin features a square format with a curved (domed) profile, creating a three-dimensional visual effect reminiscent of gravitational distortion. The geometric grid design emphasizes depth and curvature, symbolizing spacetime being warped by mass and energy as described in Einstein’s theory of relativity. The coin exemplifies contemporary numismatic experimentation, combining advanced minting technology with abstract scientific themes.