Sample interview questions: Can you explain the concept of cosmic microwave background radiation?
Sample answer:
- Cosmic microwave background radiation (CMB) is the leftover radiation from the Big Bang, the event that created the universe about 13.8 billion years ago.
- It is a faint glow of light that fills the entire universe and is the oldest light in the cosmos.
- The CMB was first discovered in 1965 by Arno Penzias and Robert Wilson, who were using a radio telescope to study the Milky Way galaxy.
- The CMB is very uniform, meaning that it has the same temperature in all directions. This suggests that the universe was very hot and dense at the time of the Big Bang, and that it has been expanding and cooling ever since.
- The CMB is a key piece of evidence for the Big Bang theory, and it has helped scientists to learn about the early universe.
- The CMB is also used to study the structure of the universe, and it has helped scientists to discover that … Read full answer