The European Space Agency (Esa) is preparing for the fiery fall to Earth of its Goce gravity-mapping satellite. The sleek spacecraft is flying just 224km above the planet, but its special electric engine that maintains this altitude is about to run out of fuel. via Pocket http://www.bbc.co.uk/news/science-environment-24043526#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa
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