Over the past decade, followers of the mysterious Turkish cleric Fethullah Gulen have opened scores of charter schools in the U.S., inspired by a man who is as powerful as he is reclusive.
Discovery was the third Space Shuttle orbiter vehicle to fly in space. It entered service in 1984 and retired from spaceflight as the oldest and most utilized orbiter. Discovery was flown on 39 Earth-orbital missions, spent a total of 365 days in space, and traveled almost 240 million kilometers (150 million miles)–more than the other orbiters.