What was arno a penzias hobbies?

While Arno Penzias was primarily known for his scientific contributions (he shared the Nobel Prize in Physics for the discovery of cosmic microwave background radiation), information about his personal hobbies is scarce.

It's likely he had interests outside of science, but there's no widely known information about them.

If you're interested in learning more about him, I'd recommend checking out his autobiography, "Years of Rice and Beans: My Life at Bell Labs."