after nearly three decades of smashing particles together, physicists at America's forerunner to the Large Hadron Collider will be raising a glass as the Tevatron is shut down for the final time later today. and while many are talking about the closure in the context of increasing international competition (like China's recent space habitat launch), the team at Fermilab (whose amazing offices are pictured above) will probably be remembering the good times, like discovering the elusive top quark particle, and looking ahead to the mysteriously named Project X