Labrador puppies “Hoey” (L) and “Hatton”, named in honor of September 11, 2001 attack victims Patrick Hoey and Lenny Hatton who died in the World Trade Center, are pictured on the grounds of the Pentagon near Washington, June 28, 2011. (Photo by Jason Reed/Reuters)

A vehicle leaves light trails in a long exposure photograph as it drives beneath the 500-metre Aperture Spherical Radio Telescope in Pingtang county, China. Construction on the device began in 2011 and is nearing completion. (Photo by Liu Xu/AP Photo)

A Libyan rebel fires on a government jet as a natural gas facility burns on the frontline on March 9, 2011 near Ras Lanuf, Libya. The rebels pushed back government troops loyal to Libyan leader Muammar Gaddafi towards Ben Jawat.

Lizzy Cundy attends the UK premiere of The Eagle held at The Empire Leicester Square on March 9, 2011 in London, England.

Dinara Safina of Russia hits a backhand in her match against Arantxa Parra Santonja of Spain during the BNP Paribas Open at the Indian Wells Tennis Garden on March 10, 2011 in Indian Wells, California.

Tiny Irons attends the UK Film Premiere of Anuvahood at Empire Leicester Square on March 15, 2011 in London, England.

Actress Kaley Cuoco arrives to the 19th Annual 'A Night at Sardi's' benefitting the Alzheimer's Association on March 16, 2011 in Beverly Hills, California.

An image of the popular video game “Angry Birds” is displayed on an iPod Touch on March 18, 2011 in San Anselmo, California. The “Angry Birds” mobile device video game developer Rovio is begnning the process of seeking an initial public offering (IPO). (Photo Illustration by Justin Sullivan/Getty Images)