'Exocomets' Common Across Milky Way Galaxy

http://www.space.com/19156-exocomets-alien-solar-systems.html

« …Comets may be as common as alien planets in star systems throughout the Milky Way galaxy, scientists say.
Astronomers have spotted likely comets around six faraway stars, bringing the total number of systems now thought to host the so-called "exocomets" to 10. It's likely that all 10 of these systems also harbor alien planets, suggesting that comets and exoplanets are often found together, as they are in our own solar system, the new study found... »