The European Space Agency spacecraft Rosetta has rendezvoused with Comet 67P, with plans to send a smaller craft to land on it November 11. The project was launched back in 2004. The comet is about 3×5 kilometers across (1.86×3 miles). Go here for more information. After the jump, photographs from the probe, showing what a comet looks like up close.
From Incredible Image of Rosetta and Comet 67P. Landing Site Selection Underway | The News Ledge: