<img src="https://spectrum.ieee.org/media-library/smiling-man-in-glasses-overlaid-with-scientific-diagrams-and-colorful-geometric-shapes.png?id=67527858&width=1245&height=700&coordinates=0%2C102%2C0%2C103"/><br/><br/><p><span>Physicists have been trying to measure the </span><span>fundamental gravit