In 1979, a U.S. satellite, Vela 6911, detected the distinctive double-flash signature of a nuclear detonation near Bouvet Island, the most remote
island in the world. The Navy's SOSUS array of underwater hydrophones also recorded a muffled thud at the same time in the same area. Various
government investigations have only resulted in wildly-differing conclusions, but there is a trend among the naysayers to ignore vital evidence. Read
The instruments used by the Vela satellites for detecting atmospheric nuclear explosions are called "bhangmeters". These are optical sensors that
record light fluctuations on a sub-millisecond time scale. All atmospheric nuclear explosions produce a unique and easy to detect signature: an
extremely short and intense flash, followed by a second much more prolonged and less intense emission of light.
No natural phenomenon is known that can imitate this signature. In fact it is reported that no false alarms have ever been detected with a Vela
bhangmeter. Every other double-flash detection has later been confirmed to be an actual nuclear test.
Despite this, there has been a lot of controversy as to what the explosion actually was, including theories regarding fragmenting meteorites. The two
separate bhangmeters recorded the second flash at different intensities. Although this was to be expected because each one had a different
sensitivity, the ratio between them was not normal. This is the only bit of solid evidence that suggests that it wasn't a nuclear explosion. I think
that, as the Vela system of nuclear-detection satellites was at least
90 months past its predicted 18-month lifespan, that various instruments
were shutting down and as such the previously-established baseline for the deviancy between the two readings was now false due to the deterioration of
the sensors (at the time the EMP-detector was completely offline, for instance).
After Vela 6911 detected the flashes, the U.S. government went into overdrive trying to find out what had happened, and who had detonated an atomic
weapon if that was the case. Aircraft sent to find fission products - a sure sign of an atomic detonation - never made it into the low-pressure system
the explosion occurred in. The official report handed to the President in 1980 came up with all number of flowery explanations, including lighting
bolts with 400X more energy than ever before seen or space-debris hitting both
of the bhangmeters at the same time and causing reflections to
mimic the distinct double flash of an atomic bomb. The report also totally ignored the SOSUS detection, and other facts such as sheep in Australia
having iodine-131 in their thyroids, something unknown at the time and since never repeated, plus a test conducted a few months after the event found
an increase in radiation levels in Western Australia, and a radio telescope in Puerto Rico also detected an anomalous traveling ionospheric
disturbance at the same time as the flashes occurred. In addition, an "unusually large" auroral light flared up a few seconds after the explosion,
thought to be "a consequence of the electromagnetic pulse of a [surface nuclear burst]."
issued to the Los Alamos Laboratory regarding the possibility that natural
phenomena had triggered the Vela instruments read '. . . make it unmistakable that this light signature originated in a nuclear explosion.'
Personally, I love the fact that all the accepted theories totally disregard the large explosion-like sound heard by the SOSUS system, instead
rambling on about micrometeoroids.
There are a large amount of links on this page: National Security Archive.
up your own mind