The team performed an initial analysis of the contents of the frozen layer by shining infrared light on it to identify absorption patterns – certain molecules absorb infrared light at specific colors, or frequencies. The plate was then heated to room temperature so the ice residue could be analyzed in greater detail at Goddard's Astrobiology Analytical Laboratory. The team found that this experiment produced a variety of complex organic molecules, including vitamin B3.
NASA Goddard Space Flight Center, Greenbelt, Maryland
Source: NASA/Asteroid and Comet Watch