of Things to Come, where the protagonist finds a manuscript written in shorthand that provides a key to understanding additional scattered material that is sketched out in both longhand and on typewriter. Since then, the term has been widely used in other contexts. For example, Nobel laureate Theodor W. Hänsch in a 1979 Scientific American article on spectroscopy wrote that "the spectrum of the hydrogen atoms has proven to be the Rosetta Stone of modern physics: once this pattern of lines had been deciphered much else could also be understood". Fully understanding the key set of genes to the human leucocyte antigen has been described as "the Rosetta Stone of immunology". The flowering plant Arabidopsis thaliana has been called the "Rosetta Stone of flowering time". A gamma-ray burst (GRB) found in conjunction with a supernova has been called a Rosetta Stone for understanding the origin of GRBs. The technique of Doppler echocardiography has been called a Rosetta Stone for clinicians trying to understand the complex process by which the left ventricle of the human heart can be filled during various forms of diastolic dysfunction. Other non-linguistic uses of "Rosetta" to name software include the European Space Agency's Rosetta spacecraft, launched to study the comet 67P/Churyumov–Gerasimenko in the hope that determining its composition will advance understanding of the origins of the Solar System. One program, billed as a "lightweight dynamic translator" that enables applications compiled for PowerPC processors to run on x86 processor Apple Inc. systems, is named "Rosetta" (then in 2020, Rosetta 2, bundled with MacOS, did the same for running x86 programs on the new Apple processors). The Rosetta@home endeavor is a distributed computing project for predicting protein structures from amino acid sequences (i.e. translating sequence into structure). The name is used for various forms of translation software. "Rosetta Stone" is a brand of language-learning software published by Rosetta Stone Inc., who are headquartered in Arlington County, US. Additionally, "Rosetta", developed and maintained by Canonical (the Ubuntu Linux company) as part of the Launchpad project, is an online language translation tool to help with localisation of software. Most comprehensively, the Rosetta Project brings language specialists and native speakers together to develop a meaningful survey and near-permanent archive of 1,500 languages, in physical and digital form, with the intent of it remaining useful from AD 2000 to 12,000. See also Egypt–United Kingdom relations Ezana Stone Mesha Stele Transliteration of Ancient