Image of one of the first bubbles seen in the COUPP-60 detector, located half a mile underground at SNOLAB in Ontario, Canada. The bubble appears as a black semi-circle on the lower left-hand side of ... more 
Image of one of the first bubbles seen in the COUPP-60 detector, located half a mile underground at SNOLAB in Ontario, Canada. The bubble appears as a black semi-circle on the lower left-hand side of the image. The white ovals in the center are less 
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SPACE.com | Photo By SNOLAB
Fri, May 3, 2013 1:12 PM EDT