So, many of you may or may not know, the Aurora jet aircraft is a speculated top-secret jet capable of speeds of Mach 6+. (Some speculate a top speed of Mach 20.)
Ever since "skyquakes" have occurred in Los Angeles, as well as the appearance of "donuts on a rope" contrails in the late 1980's, many speculated that the U.S.A.F. has been testing a supersonic aircraft, called the Aurora, the name coming from a slip in the U.S.A.F. budget requests, under the SR-71 and U2 budget requests.
The American government has since denied the existence of any aircraft similar to the Aurora since.
In addition to this, the SR-71 spy plane was retired from service in 1999, saying to reduce the budget of up to $400,000,000 to operate the fleet, as well as the claim that spy satellite's could perform the role better.
Usually, that wouldn't be an issue.
But, unusually, the retirement of the SR-71 spy plane was the only retirement not opposed by the U.S.A.F.
In July, 1996, NASA announced the start of the X-33 project. A rocket capable of supersonic speed and the ability to reach outer space from a normal landing.
Since the announcement of the X-33 project, sightings of the Aurora have continued. The government continued to deny the existence of the Aurora jet, claiming that the sighting was of test flights of the X-33.
Also, in the mid 90's, a lawsuit was filed against Area 51 for burning hazardous/radioactive waste, a by product of stealth aircraft.
And that's what we're left with as of now.
So, based on this information, this is my conclusion:
The Aurora does exist. The U.S. government is lying to the general public, (but what's new?)
The X-33 is not the Aurora, but a space-capable variant of the Aurora.
Lockheed-Martin X-33
The Aurora
Note that the two aircraft are not similar in profile shape, thus implying that the X-33 is an improved design on the Aurora, also a possibility of and improved design, or a modified design to accomodate space flight.
Thoughts, alternate conclusions, and other input is encouraged.