Life beyond Earth may form in the coldest depths of space, Ryugu asteroid samples reveal 

 PAHs may be able to form in cold regions of space, affecting what scientists think about the origins of planets and possibility of alien life. 

https://cdn.mos.cms.futurecdn.net/yYWQjQuHr2SNWGJ5u8feXA.jpg

https://www.space.com/asteroid-ryugu-samples-origins-life-cold