I saw this first video a couple days ago and my first impression was that of utter astonishment.  (If you watch full-screen you can see flashing red lights in the sky after the ‘orb’ flew back up.)

Even though the reactions of the two guys seem so authentic, I quickly became skeptical and considered it to be fake.   Today, more videos, such as those below, have cropped up recording the same event, and again, the people’s reactions are just way to real for this to be simply post editing effects.  Whether it’s alien in origin or some type of human-made, holographic technology, it seems to have actually occurred:

and the following was taken by the other guy from the first video:

and here is all three synchronized:

The video below also was released which has been shown to be a hoax made with this photo.   The other videos still haven’t been throughly debunked, however.

UPDATE:  The exact same event (descending orb, flashing red lights) also occurred at the same time in Utah.  Footage & news report:

and a few weeks earlier this interesting footage was recorded at the same location in Jerusalem.  Notice the tourist in the grey shirt pointing at the object before it comes into frame.

UPDATE 3:  DANG IT!!  Looks like the other 1/28 Dome of the Rock videos are part of a hoax too.  So annoying! >.<