Oh X37B, The World Has Changed Since You Left Seven Months Ago..

Top secret American spy plane returns to Earth after seven months... but U.S. still won't say what it was doing in space

The U.S.'s first unmanned re-entry spacecraft landed at an airfield today, seven months after it was launched.

The X-37B's exact purpose remained shrouded in secrecy when it touched-down at at Vandenberg Air Force Base on the California coast 130 miles north west of Los Angeles.

It was launched by an Atlas 5 rocket from Cape Canaveral, Florida, on April 22, with a maximum mission duration of 270 days and is suspected of being an advanced spy plane.

The rest of the article is a yawner, as it basically tells you nothing more than these three sentences.  But that's what's intriguing:  One knows nothing more about Why it went on a Seven Month Mission.  Words were strung together, but nothing was said.  So what is it's real purpose?