With the UAE's Hope, China's Tianwen-1, and US's Mars 2020 all reaching the The Red Planet in February 2021, will their rovers and orbiters find traces of life? Will our robotic astrobiologists discoveries shed light on where we come from, or will we find Martian microbial life with entirely new cellular structures & molecules? Was Mars once a planet where life thrived, and what will Mars' past tell us about Earth's future?