...And now...not an answer, but some more of the story...
~~~
July 8, 2011 - Huge, Mysterious, Spherical “Shock Wave?”
“We had no clue what it was. All we could conjecture
was that it was a shockwave of some sort. It was quite obvious
it was a shockwave, but from where, we didn't know.”
- Daniel Devost, Dir., Canada-France-Hawaii Telescope, Mauna Kea
~~~
Video frame of rapidly expanding, huge, mysterious,
sphere at 3:41 AM Hawaii time on June 22, 2011, captured by
astronomers at the Subaru telescope in the Canada-France-Hawaii
Telescope (CFHT) complex on Mauna Kea mountain top.
~~~
Hawaii Tribune-Herald, July 8, 2011: “The hazy bubble of light appeared near the horizon in the northeastern sky and slowly expanded for several minutes until it filled almost the entire frame of the camera, before gradually fading from sight shortly after 3:45 a.m. ... Because images are only taken by the camera every 30 seconds, the expansion and disappearance of the light ball takes only a few seconds on the video ... captured by a low-light still camera mounted on the catwalk of the CFHT telescope. It is pointed at the horizon and is normally used to detect clouds and bad weather heading for the telescope.”
Vandenberg AFB sources in California confirmed there was a U. S. Minuteman III intercontinental ballistic missile launch about three minutes before the expanding sphere appeared in the astronomers' videotape. One theory is that the missile's third stage separated upon reaching the upper atmosphere and remaining fuel was dumped, but there is no proof of connection between the two events. See: Hawaii Tribune-Herald.