What analytical approach is considered the "gold standard" for definitively confirming biosignatures from Mars?

Answer

Returning collected cores to sophisticated Earth-based laboratories

Sending the collected cores back to Earth allows examination using instruments far larger and more capable of identifying specific cellular structures and complex polymer arrangements.

What analytical approach is considered the "gold standard" for definitively confirming biosignatures from Mars?

#Videos

What We Just Found on Mars - YouTube

MarsSpaceastrobiologyevidencemicrobial life