The Fringe team attempts to find out what process enables people to become lighter than air and float. Peter and Olivia deal with trust issues in their relationship, while Walter becomes increasingly obsessed with retrieving William Bell's consciousness from beyond the grave. Written by
Did You Know?
The episode title is the chemical symbol for the element Osmium, the densest of the naturally occurring elements. See more
Peter Bishop states that the element lutetium is "extremely dense" and has a density "just like" osmium. In fact, lutetium's density is less than half that of osmium and is similar to many other elements including lead, silver and gold. See more
Dr. Walter Bishop
"They glanced up and saw Icarus float through the sky, and taking him for a god, They stood still in wonder."
References Star Trek