The loss of a brilliant man with quite the sense of humor, from all indications. His appearances on The Simpsons, Futurama and Big Bang (or at the very least his willingness to let them use his likeness) are something of a testament to that. Rest in peace, good sir.
As said, a brilliant mind and man, he will be missed. He has gone to explore the cosmos with a closer look
The man was an inspiration and a pioneer. RIP As he once said “However bad life may seem, there is always something you can do, and succeed at. While there’s life, there is hope."
He lived longer than the doctors gave him through share strength of will and curiosity towards what is Out There