Lee Thompson, an expert in particle physics at the University of Sheffield (UK) told Science : "The scientists have "seen" the void using three different muon detectors in three independent experiments, which makes their finding very robust." Christopher Morris, physicist at Los Alamos National Laboratory called the findings "pretty amazing". Jerry Anderson who worked on Khafre's Pyramid and was a member of the team of Luis Walter Alvarez, the first scientist to use muography inside a pyramid in 1965, said to Los Angeles Times, with a laugh: "I am very excited and very pleased,...I wish we had worked in the Great Pyramid, now that I look back on it".