After two years of science, the European Space Agency's Rosetta mission ended today in a gentle crash-landing. But if you haven't been tracking this spacecraft's movements as obsessively as we have, you might be wracking your brain this morning trying to remember what the Rosetta mission was.
After two years of science, the European Space Agency's Rosetta mission ended today in a gentle crash-landing. But if you haven't been tracking this spacecraft's movements as obsessively as we have, you might be wracking your brain this morning trying to remember what the Rosetta mission was.
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