Incredible Photos From Spacecraft’s 4 Billion-Mile Journey

Last week, a small spacecraft named Rosetta caught up with Comet 67P/Churyumov-Gerasimenko. Their rendezvous took place between the orbits of Mars and Jupiter and marked the end of a 10-year, 4 billion-mile chase.

The journey took Rosetta along a tortuous, dizzying path as it traveled from Earth to its faraway, 2.5-mile wide target. Looping around Earth and Mars several times, the European Space Agency's probe gathered gravity assists that would help sling it to Comet 67P/Churyumov-Gerasimenko. Now about 62 miles (100 km) from the two-lobed object, the spacecraft is sending detailed images of the comet's surface. Over the next six weeks, it will descend ...

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