How insane are the left? They believe a "well into his adult years" - drug addicted - stab inducing - woman beating - criminal could be a doctor or an Astronaut.
Most Universities complete criminal background checks - where they may or may not reject the application because of the criminal background. The odds of rejection go down if you present your criminal background yourself -- which Floyd had a history of lying about his criminal background... So he wasn't going to be accepted into any Doctorate based University programs.
What about NASA you ask? According to Chron who answered the question about clearance to work at NASA:
Security Disqualifications
NASA can disqualify an applicant or employee from receiving a security clearance for a wide variety of reasons. (Begin description of George Floyd) Financial problems, dishonesty, criminal behavior, excessive drinking, addiction to drugs or associating with political extremists of any kind can result in disqualification. (End description of George Floyd).