This fascinating Paris Review article gives the background to Sarah Howe's beautiful poem that she dedicated to Stephen Hawking on the centenary of Einstein's general theory of relativity, in 2015. Exploring how scientists use metaphor as poets do; and how metaphors can mislead; and the duplicity of light, this brief article and the poem it speaks of provide a wonderful insight into the thinking process of a fine poet.
https://www.theparisreview.org/blog/2015/10/08/on-relativity/