Aurora Aircraft a Myth?

(A computer rendered image a supposed look 'Aurora')

A very facinating and intrigue case of a 'so' top secret aircraft known as Aurora has been discuss in the internet forum. I couldn't help it to post it here although the the truth is still out there.
A wide range of reports of observations of mysterious aerial phenomena have been associated with the Aurora aircraft. These observations are also in many regards consistent with the suggested Exotic Propulsion Aircraft. Those reports relating to both possibilities are unique to the Exotic Propulsion Aircraft are discussed subsequently.
These unexplained phenomena have led some to conclude that: "...the US Government has secretly developed and deployed a hypersonic reconnaissance aircraft, probably as a replacement for the SR-71."
There are two classes of reports relating to Aurora: those that are consistent with a limited experimental test program; and those that are suggestive of the existence of an operational capability.
Edwards Air Force Base in southern California is the primary facility used by the American military for the flight testing of experimental aircraft. In addition, the Groom Lake facility at Nellis Air Force Base in Nevada was used for developmental testing of the F-117A, and has been associated with reports of other advanced aircraft. Given this geographical concentration, it would not be surprising if secret aircraft undergoing flight tests were to be observed in the Southwestern United States.
In October 1990 Aviation Week & Space Technology published reports of:"A high altitude aircraft that crosses the night sky at extremely high speed.... The vehicle typically is observed as a single, bright light -- sometimes pulsating -- flying at speeds far exceeding other aircraft in the area, and at altitudes estimated to be above 50,000 ft.... Normally, no engine noise or sonic boom is heard."
More recently, a sighting by two British Airways pilots and other witnesses at Manchester Airport on January 6 1995 has been attributed to the Aurora aircraft. Probably the most compelling evidence for such flight tests are the series of unusual sonic booms chronicled above Southern California, beginning in mid to late 1991.
On at least five occasions, these sonic booms were recorded by at least 25 of the 220US Geological Survey sensors across Southern California used to pinpoint earthquake epicenters. The incidents were recorded in June, October, November, and late January 1991. Seismologists estimate that the aircraft were flying at speeds between Mach 3 and 4 and at altitudes of 8 to 10 kilometers. The aircraft's flight path was in a North North-East direction, consistent with flight paths to secret test ranges in Nevada. Seismologists say that the sonic booms were characteristic of a smaller vehicle than the 37 meter long shuttle orbiter. Furthermore, neither the shuttle nor NASA's single SR-71B were operating on the days the booms were registered.One of the seismologists, Jim Mori, noted:"We can't tell anything about the vehicle. They seem stronger than other sonic booms that we record once in a while. They've all come on Thursday mornings about the same time, between 6 and 7 in the morning." These "skyquake" are a continuing phenomenon, with the most recent report over Orange County, CA coming on 20 July 1996.
It is reported that the "quake" occurred around 3pm PST, fitting the "skyquake" pattern in the following respects:
1.It occurred in a coastal area.
2.Described as similar to an earthquake in some respects (rattling of loose objects, etc) but also like a boom (but no distinct double bang as far as is known).
3.Severe enough to light up government and media switchboards, but no known damage.
4.Not an earthquake (CalTech sensors saw nothing)
5.Local military bases deny any knowledge.
6.No known other source (eg explosion).
Intercepted radio transmissions are equally intriguing: "On Apr. 5 (a Sunday) and Apr. 22, radio hobbyists in Southern California monitored transmissions between Edwards AFB's radar control facility (Joshua Control) and a high-altitude aircraft using the call sign "Gaspipe."
The series of radio calls occurred at approximately 6 a.m. local time on both dates. "Controllers were directing the unknown Gaspipe aircraft to a runway at Edwards, using advisories similar to those given space shuttle crews during a landing approach. The monitors recorded two advisories, both transmitted by Joshua Control to Gaspipe: "You're at 67,000, 81 mi. out," and "Seventy mi. out, 36,000. Above glide slope."
Reported sightings of unusual high performance aircraft are not confined to the Southwestern United States. More recently, such observations have also been reported in other parts of the United States, as well as in Europe.
These reports are particularly intriguing because they are difficult to reconcile with an experimental test program, since there would be no reason for test flights to be conducted in Europe. Rather, these reports would have to be understood in the context of the deployment of an operational aircraft.
One unexplained set of observations was reported at Beale Air Force Base, the California facility that was long home to the SR-71. On two consecutive nights in late February 1992, observers reported sighting a triangular aircraft displaying a distinctive diamond-shaped lighting pattern, comprised of a red light near the nose -- similar to the F-117 configuration -- two 'whitish' lights near what would be conventional wingtips and an amber light near the tail. While the wing lights are reportedly much brighter than normal navigation lamps, they do not illuminate the aircraft's planform. Observers claim the vehicle's wing lights are approximately twice as far apart as those on the F-117, and nose-to-tail light spacing is about 50 percent longer than that on the stealth fighter.
Reports of "unusually loud, rumbling sonic booms" near Pensacola, Florida in November 1991 have also been associated with the Aurora program. At least 30 unexplained sonic booms have been reported in Southern California in late 1991 and early 1992.
By mid-1992 noted aviation observer Bill Sweetman concluded that, "The frequency of the sonic booms indicates that whatever is making them is now an operational aircraft."
In early 1992 it was reported that:"... RAF radars have acquired the hypersonic target travelling at speeds ranging from about Mach 6 to Mach 3 over a NATO-RAF base at Machrihanish, Scotland, near the tip of the Kintyre peninsula, last November and again this past January."
It was recently reported than on 27 September 1995 David Morris of Walsall, Cornwall UK took a picture of a triangular shaped plane being refueled by a KC-135, and flanked by a pair of F-111s. The unknown aircraft appeared to be about three-quarters the size of the KC-135. This picture has been widely distributed. However, the "refuelling" picture is a hoax .
In 1990, it was suggested that the Aurora (also reportedly designated "Senior Citizen") had been intended to be the SR-71's successor, but it had been canceled along with the "Blackbird" in 1989.
Above all this until now there is no concrete evidence to proved (The existing of Aurora) all this, there is no clear photo evidence.