Rosetta Awakens!

European Space Agency engineers and scientists hung nervously over their monitors, awaiting a feeble radio signal from a space voyager over 800 million kilometers (500 million miles) away. As the minutes dragged on, the tension in the Space Operations Centre was palpable. All over the world, people on Twitter and other social media typed out words of encouragement ... ... and then a thin, straight spike appeared among the noise of the cosmos. Rosetta had woken up, and was saying "Good morning!" ...