Were Pius V and Galileo Galilei alive at the same time?
Yes. Pius V and Galileo Galilei were alive at the same time for 8 years, from 1564 to 1572.
Pius V was 60 when Galileo Galilei was born.
Galileo Galilei was 8 when Pius V died, aged 68.
Pius V
16th‑century Italian pope and Catholic saint, leading Counter‑Reformation reformer
Born 17 January 1504 · died 1 May 1572, aged 68