Whether or not Aurora exists, the "refueling photo" is apparently a fake (but don't tell the Russians).
From one analysis of Aurora (the photo in question is about 3/4 of the way down the page):
http://www.fas.org/irp/mystery/aurora.htm
"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 -- it was montaged by Bill Rose for the October 1995 issue of Astronomy Now (UK) magazine. There, it is captioned "A simulation of the refuelling of the top secret 'Aurora'. Photo composition by Bill Rose"
Everyone knows the Aurora is berthed inside the Hollow Earth. ;)