Ok, a little interpretation "as I understand it";
"Diatom Frustules" are skeletons of single cell marine animals, which means there's life in the heavens above us somewhere, as their remains have been found in parts of a comet which landed in Sri Lanka at the end of December 2012.
Here's a little bit of trivia gleaned from Google:
Diatoms are microscopic, unicellular algae that produce intricate silica (glass) cell walls that overlap like the top and bottom of a box. When diatoms die, their soft, internal parts deteriorate, leaving their hard, porous, glass skeletons behind. Diatoms are found in aquatic environments. In the United States, thick deposits of diatom skeletons are found on the floors of former aquatic inland and coastal habitats.
