The North Sea Aurora sighting

This document is a transcript of a long-running internet forum discussion from the 'Secret Projects' website, spanning from May 2009 to July 2018. The central topic is the 24 August 1989 sighting by Chris Gibson of an unidentified delta-shaped aircraft in the North Sea, often associated with the rumored 'Aurora' programme. Participants, including users identified as 'Abraham Gubler', 'flateric', 'LowObservable', and 'shockonlip', engage in a technical debate regarding the nature of the aircraft. The discussion focuses on whether the sighting represents a hypersonic vehicle or a more conventional, albeit secret, low-altitude penetrator design. Proponents of the latter theory argue that the planform described by Gibson aligns with declassified design concepts for the Northrop ATB (Advanced Technology Bomber) low-altitude penetrator. Conversely, others maintain that the hypersonic theory remains plausible given the context of the era, citing contemporary reports of 'Aurora' and other high-speed projects. The thread includes references to various aerospace programmes, including Have Blue, Tacit Blue, the F-117A, and the B-2, as participants analyze the feasibility of secret US aircraft operating in Europe. The debate highlights the lack of definitive evidence, with participants acknowledging that their conclusions are based on conjecture, forensic analysis of declassified documents, and the interpretation of historical reports. The thread concludes without a consensus, with participants noting that while the evidence is limited, the discussion has exhausted the available information.