The discovery is a boost for the Panspermia Hypothesis — but it's a potential nightmare for scientists concerned about interplanetary contamination.

It's the ultimate baseline study — an effort to collect the fullest picture of what a healthy human being should look like.

One day, in the not so distant future because it's actually being used in a testing environment today, people will use invisible nano-tattoos to give doctors an instant snapshot of their body's inner workings.