Launched a decade ago, the European Space Agency's Rosetta, the first probe designed to attempt landing on the Comet 67P/Churyumov-Gerasimenko, announced waking up from its hibernation by tweeting the words "Hello World!".
Since its launch in 2004, Rosetta has made three flybys of Earth and one of Mars to help it on course to its rendezvous with 67P/Churyumov-Gerasimenko, encountering asteroids Steins and Lutetia along the way.
Operating on solar energy alone, Rosetta was placed into a deep space slumber in June 2011 as it cruised out to a distance of nearly 800 million km from the warmth of the Sun, beyond the orbit of Jupiter.
Now, as Rosettas orbit has brought it back to within only 673 million km from the Sun, there is enough solar energy to power the spacecraft fully again.
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|"Because in deep space, no one can point you to a hardware store."|
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|“Eliminating the time needed to stop and re-charge a conventional electric car’s battery.”|
|“Nobody is forcing the participants to stay, of course, but if they leave, they won’t be paid.”|
|“That science fiction future where robots can do what people and animals do may be closer than you think.”|
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|“This 160-step biochemical process is very well studied, and surprisingly inefficient.”|
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|“During this phase of decline, the US was likely to go through a phase of reactionary 'fascism'.”|
|“We’re going to start to see chip implants get the same realm of acceptance as piercings and tattoos.”|
|“The shift from fuel and pistons to batteries and electric motors is unlikely to take that long.”|
|“Our Internet handlers, not government, are using operant conditioning to modify our behaviour today.”|
|“Within 30 years, half of humanity won't have a job. It could get ugly — there could be a revolution.”|
|“After 78 years, the helicopter has been reinvented.”|