Is top secret spy plane to blame for sonic boom over Shropshire?
Could this be the reason for the sonic boom that has been heard over Shropshire in recent weeks?
The booming noise has been reported above the county's skies twice in the last month.
And the latest theory doing the rounds is that it could be the work of the world's most secret aircraft.
The futuristic 'Aurora' spy plane travels at six times the speed of sound.
And it is at the centre of the latest conspiracy theory, in which it is claimed the booms are caused by an aircraft possibly travelling at supersonic or hypersonic speeds above the Atlantic.
The Aurora is a codename for a spy plane rumoured to be under development by the US military.
Officially the aircraft does not exist, but some experts believe it is very real and in the skies.
It is also capable of creating sonic booms that could be heard across large areas.
In November 2013, Lockheed Martin announced it was developing a similar SR-72 spy plane said to be able to accelerate up to Mach 6.
Reports of a booming noise were made on Saturday night across the UK, including over Shropshire and Mid Wales. There have also been similar reports on the east coast of America. And on November 17, people in north Shropshire said they heard a sonic boom, leading to some theories linking it to a Eurofighter flying from an airbase in the county.
Dr Bhupendra Khandelwal, an engineering research associate from Sheffield, claims the loud bangs were created by a type of experimental jet engine called a pulse detonation engine.
Those claiming the noises are linked to secret spy plane point to the lack of Government response to queries. Nothing has been said other than denials that the source was a eurofighter.
