This article is rated C-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

Biography: Science and Academia This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to join the project and contribute to the discussion. For instructions on how to use this banner, please refer to the documentation.BiographyWikipedia:WikiProject BiographyTemplate:WikiProject Biographybiography This article is supported by the science and academia work group (assessed as Low-importance). United Kingdom Low‑importance This article is within the scope of WikiProject United Kingdom, a collaborative effort to improve the coverage of the United Kingdom on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.United KingdomWikipedia:WikiProject United KingdomTemplate:WikiProject United KingdomUnited Kingdom Low This article has been rated as Low-importance on the project's importance scale. Astronomy: Solar System Mid‑importance This article is within the scope of WikiProject Astronomy, which collaborates on articles related to Astronomy on Wikipedia.AstronomyWikipedia:WikiProject AstronomyTemplate:WikiProject AstronomyAstronomy Mid This article has been rated as Mid-importance on the project's importance scale. This article is supported by Solar System task force (assessed as High-importance).

He is also a member of the National Academy of Sciences according to his CV

Why does this article state that he is American when, if you read the facts of his biography, he was definitely British from birth until adulthood.... at what point did he stop being British? 81.135.72.147 (talk) 13:02, 28 September 2019 (UTC)[reply]

He was certainly British to start with. But some while ago, watching one of his lectures on Youtube - after checking this morning, I think that this video has since been taken down - I heard the chap who spoke before him introduce him as British, whereupon he immediately replied "Oh no, I haven't been British for a long time - that's just something that it still says on the internet." As he has been resident in the US for some four decades, I think that it would be astonishing if his new nationality were anything other than American, though I haven't been able to find any proof that this is the case. I'd drop him a line to ask him, if taking up the time of such an important scientist on something so trivial didn't seem a bit impertinent!Niggle1892 (talk) 23:23, 30 September 2019 (UTC)[reply]