Is it possible to have life in vacuum?
As @terdon comments, dormant organisms can survive in vacuum. This includes lichens, bacteria, and even an animal: the ever-amazing and adorable tardigrade (Jönnson et al 2008). In 2006, tardigrades survived exposure to the vacuum of outer space with no appreciable difference in mortality compared to controls.



Tardigrade Hypsibius dujardini, a different genus than the ones sent into space, but probably equally hardy. Photo by Bob Goldstein &amp; Vicky Madden (CC by-nc-ca via Goldstein lab - tardigrades on flickr).



Jönsson, K. I. et al (2008). Tardigrades survive exposure to space in low Earth orbit. Current Biology 18(17):R729–R731