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What happens to light when passes near a black hole? A cluster of galaxies? Any giant mass? The gravitational pull from these objects can distort or bend the light as it travels towards an observer. This effect is called gravitational lensing. Light follows the curvature of spacetime. Gravitational lensing was predicted in Einstein’s general theory of relativity and is being used to detect the presence of dark matter and help discover what dark matter could be. This short film is based around the science of gravitational lensing and poetically looks at light’s path and how it could offer cues to the very nature of the universe. With thanks to the ARC Centre of Excellence for Dark Matter Particle Physics, Dr Alan Duffy, Dr Rebecca Allen, Natasha Mitchell and Radio National’s Science Friction.
