Graphic shows the immense size of Rosetta’s comet and risks such large objects pose to Earth

Comet 67P/Churyumov-Gerasimenko, just 3km wide, would vaporize Los Angeles if the comet impacted the city. However, this graphic was produced to show the comet’s size. Churyumov-Gerasimenko doesn’t cross Earth’s orbit and there is no chance of a near-Earth collision.
[link to theextinctionprotocol.wordpress.com]