If you were wondering how big comets can get, in particular comet 67P/Churyumov-Gerasimenko then look no further. After an Imgur user uploaded pictures of the comet with a a Boeing 747-400 Photoshoped into the image as well it really puts the size of the comet into perspective. This thing is ridiculously big.
In other news however, how did a jumbo jet get into outer space? our minds are blown.