Potential possibility. Kav gets confirmed. After which undeniable irrefutable dam*ing PROOF shows he did attempt rape. What happens then?

Is THAT impeachable or do we have to live with him on SCOTUS until he dies knowing he is and always will be a sorry-a**ed drunk 17-year-old who tried to rape a 15 year old girl?  There will always be an asterisk by Clarence Thomas referring to his integrity/honesty/character. All suspect forevermore. What's bigger than an asterisk?