Formerly a Forensic Biologist with the Forensic Science Service, I am an expert witness in DNA profiling, body fluid evidence, bloodstain pattern analysis, and clothing damage analysis. I have research expertise in Forensic Genetics, mainly focusing on body fluid evidence and epigenetics.
This discipline, still in its infancy, is propelled by the inevitability of human nature. Space presents a unique and harsh environment for forensic investigations. Settings that present altered, cosmic radiation, extremes in temperature, and the need for oxygen-providing climate systems provide a few examples of the unearthly variables that are faced by future explorers.introduces novel challenges in understanding how evidence behaves.
Therefore, most environments in space have low or microgravity rather than zero gravity. Given that gravity is ubiquitous and largely constant, we pay very little attention to it, usually automatically factoring it in to calculations as a constant without a second thought.But for a forensic science discipline like bloodstain pattern analysis, gravity plays a critical role in how airborne liquid blood interacts with a surface and creates stain patterns.
A synthetic analogue of blood was used instead of real blood due to biohazard concerns in the cabin of the plane. This analogue substitute mimicked the physical properties of blood’s viscosity and surface tension. To initiate the experiment, the analogue blood was loaded into a syringe, and once microgravity was induced in free-fall, the syringe was manually depressed to project the blood across 20cm onto a sheet of white paper.
This straight-line flight path is a fluid example of inertia in action. However, with a distance of only 20cm, this had minimal effect on the subsequent pattern.
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