America's biggest rocket launches top-secret spy satellite 

The United States' largest rocket launched a spy satellite on a hush-hush mission Wednesday.An unmanned Delta 4-Heavy rocket lifted off the pad at California's Vandenberg Air Force Base at 2:03 p.m. ET (11:03 p.m. PT) Wednesday, carrying a classified payload into a polar orbit for the U.S.

Read the whole article on MSNBC: Science

More from MSNBC: Science