Hyper is a mission that will investigate two of the fundamental forces of nature: gravity and electromagnetism. For its investigation into gravity, Hyper will precisely map the fabric of space around the Earth, strictly testing Albert Einstein's theory of gravity: General Relativity. For its investigation of the electromagnetic force, Hyper will precisely measure the fine structure constant α. This number describes the strength of the electromagnetic force and its value is currently in dispute.

Credits: ESA