AI startup Astromech has secured $20 million in a follow-on funding round, bringing its total raised to $60 million and valuing the company at $3.8 billion. The round was led by Bob Nelsen, with participation from Peak 6, NeoGenesis Capital, Builders VC, and CAZ Investments. Astromech plans to use the funds to further develop its biological operating system, designed to forecast evolutionary change by analyzing genomic, evolutionary, and biological data.