DARMSTADT, Germany - A European space probe plunged into the hazy, mysterious atmosphere of Saturn's moon Titan on Friday, and elated mission controllers said it had opened its parachute to slow its descent as it gathers data. The Huygens probe had successfully restarted its systems and the mission, which could provide clues to how life arose on Earth, was going well, said Roberto Lo Verda, a spokesman for the European Space Agency. "It has entered the atmosphere, and entered it correctly," Lo Verda said. "We know the batteries are switched on, the parachute has deployed and it has slowed down...