The Beginning of Everything
Imagine standing on the precipice of discovery, where the unknown stretches endlessly before you. Arno Allan Penzias found himself in this exact place, unaware that his quest to silence the ‘hiss’ in his antenna would ultimately reveal the universe’s oldest whisper – the cosmic microwave background. Penzias was born in Germany, and his journey started with him fleeing from the Nazis to eventually winning the Noble Prize. This essay will delve into the life, achievements, and lasting legacy of Arno Allan Penzias, mainly focusing on his pivotal discovery of the cosmic microwave background radiation.
Penzias pursued a college education at the City College of New York, initially focusing on chemistry. However, he developed a keen interest in physics, eventually changing to this major. After graduation, he enrolled in Columbia University to earn a Ph.D., working on microwave physics and radio astronomy. These formative years laid the foundation for a career built on scientific excellence and curiosity.
Penzias’s most renowned achievement occurred during his tenure at Bell Labs in 1964. Alongside his colleague Robert Wilson, he would make a discovery that would forever change our understanding of the universe. Penzias and Wilson detected faint background radiation emanating from all directions in space (Penzias & Wilson 1979) . The duo initially assumed there was a malfunction with their antennas but would later find out that they had discovered the cosmic microwave background radiation, the afterglow of the Big Bang.
The cosmic microwave background radiation’s significance is preeminent as it serves as the first conclusive evidence for the Big Bang theory. But why is learning about the Big Bang important? The Big Bang is the prevailing cosmological model explaining the universe’s birth and expansion; understanding it is paramount to uncovering the fundamental laws of physics and most importantly, what our place in the universe is.
Ever since I was a kid, I had an insatiable curiosity about the cosmos. When I think about the universe, it always leads me to ask: “Why? Why is the universe as it is? Why is it expanding? We know how gravity works, but why does it work?” We have no answers to “why” questions when it comes to the universe, which is why the discovery made by Penzias and Wilson is so significant. As a career, I want to contribute to the exploration of the cosmos. I am taking the first step by pursuing a career in Mechanical Engineering. I hope to one day have the opportunity to make groundbreaking discoveries like Penzias and Wilson.
- Penzias, A. A., & Wilson, R. W. (1979). A measurement of excess antenna temperature at 4080 MHz. In A Source Book in Astronomy and Astrophysics, 1900–1975 (pp. 873-876). Harvard University Press.
- Great Big Story. (2016, September 26). How two astronomers accidentally discovered the Big Bang [Video]. YouTube. https://www.youtube.com/watch?v=cPalHdzsImc
- The Nobel Prize in Physics 1978. (n.d.). NobelPrize.org. https://www.nobelprize.org/prizes/physics/1978/penzias/biographical/
