This handout picture taken on 3 August 2014 by space probe Rosetta
Starting now, Rosetta is no longer chasing Churyumov-Gerasimenko – it is travelling with it. On August 6, the spacecraft kept a 10-year date with an icy comet the size of a mountain.
Rosetta made the last of a series of 10 engine firings it began in May that allowed it to enter a triangular orbit just ahead of its speeding, volatile target known as 67P/Churyumov-Gerasimenko.
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