European spacecraft Rosetta became the first ever to catch up with a comet on Wednesday, a landmark stage in a decade-long space mission that scientists hope will help unlock some of the secrets of the solar system.
Scientists and spectators at ESA's mission control in Darmstadt, Germany, cheered Wednesday after the spacecraft successfully completed its final thrust to swing alongside comet 67P/Churyumov-Gerasimenko.
A Twitter account run by the ESA tweeted a photo of the craft's approach shortly after 5:30 a.m. ET.
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