Amazing! To get an idea of how large the comet 67P/Churyumov-Gerasimenko is, it has been rendered next to a city.
67P/Churyumov–Gerasimenko (abbreviated as 67P or 67P/C-G, and written in Cyrillic as Чурюмова — Герасименко) is a comet, originally from the Kuiper belt, with a current orbital period of 6.45 years, a rotation period of approximately 12.4 hours and a maximum velocity of 135,000 km/h (38 km/s; 84,000 mph). Churyumov–Gerasimenko is approximately 4.3 by 4.1 km (2.7 by 2.5 mi) at its longest and widest dimensions. It will next come to perihelion (closest approach to the Sun) on 13 August 2015. Like most comets, it is named after its discoverers, Soviet astronomers Klim Ivanovych Churyumov and Svetlana Ivanovna Gerasimenko. They first observed it on photographic plates in 1969.