Cosmic Times Quiz

What is the temperature of unexplained microwave radiation coming from empty space?

• 10-25 billion years

• 7 billion years

• 25 billion light years

• 3.5 degrees Kelvin

What is the cosmic background radiation?

• Microwaves from every direction of space

• Radio signals from the birth of the Universe

• Infrared light from the Big Bang

• Electromagnetic radiation from Earth's atmosphere

How did Arno Penzias and Robert Wilson discover the cosmic background radiation?

• By tracking down unwanted microwave signals

• By building a telescope

• By studying starlight and other radiation

• By detecting radio signals from the Echo satellite

Who predicted the existence of cosmic background radiation?

• George Gamow

• Ralph Alpher

• Robert Herman

• All of the above

What theory does the discovery of cosmic background radiation weaken?

• Steady State theory

• Big Bang theory

• Oscillating universe theory

• Expansion and cooling theory

What are the possible fates of the universe according to the Big Bang theory?

• Open universe and closed universe

• Expansion and cooling forever

• Creation of a new universe

• All of the above

What is the Steady State theory?

• Expansion of the universe caused by the spontaneous creation of particles

• Theory that explains the cosmic background radiation

• Theory that predicts an oscillating universe

• Theory that supports the Big Bang

What is the main similarity between the Steady State model and the oscillating universe model?

• Both have a beginning and an end

• Both explain the cosmic background radiation

• Both predict the expansion and cooling of the universe

• Both have no beginning or end