Brian Cox

Brian Cox was a British scientist. In the early 21st century, he appeared on television, claiming that the Shakri cubes could not have been falling space debris but was uncertain if they were of extraterrestrial origin saying you would have to find someone better than himself to explain them. (TV: The Power of Three)

Brian Cox once entered the Eleventh Doctor's TARDIS and was not phased by it. (TV: A Night with the Stars)

In 2016, Miss Andrea Quill showed one of his science documentaries to her physics class at Coal Hill Academy. (TV: Co-Owner of a Lonely Heart)

Behind the scenes
In 2013, Cox presented The Science of Doctor Who on BBC Two and appeared in a skit with Matt Smith.