Were Diego Velázquez and Isaac Newton alive at the same time?
Yes. Diego Velázquez and Isaac Newton were alive at the same time for 17 years, from 1642 to 1660.
Diego Velázquez was 43 or 44 when Isaac Newton was born.
Isaac Newton was 17 when Diego Velázquez died, aged 60 or 61.
Isaac Newton
English mathematician and physicist
Born 25 December 1642 (Julian calendar) · died 20 March 1727 (Julian calendar), aged 84