The European Space Agency launched the Rosetta space probe mission in March 2004 aboard an Ariane 5 rocket. Rosetta has a square shape with solar panels and traveled to comet 67P/Churyumov-Gerasimenko, capturing images that showed the comet has an irregular shape with large craters and protruding rocks. Rosetta's images over time provided insight into the comet's surface as it approached for a landing.