Cosmic Microwave Background Quiz

What was the universe like in the first few seconds after the Big Bang?

• A vacuum with no particles

• Filled with fully formed stars

• A sea of free electrons and atomic nuclei

• A calm and cool place

How did Arno Penzias and Bob Wilson discover the cosmic microwave background?

• Through a planned experiment

• By accident while working on Project Echo

• By studying the moon

• By observing the sun

What was the purpose of Project Echo?

• To develop early television technology

• To study cosmic radiation

• To bounce radio communications off balloons

• To explore the surface of the moon

What do the tiny fluctuations in the cosmic microwave background represent?

• Variations in temperature

• Differences in density

• Changes in color

• Shifts in sound frequency

How has the cosmic microwave background helped scientists?

• By predicting future cosmic events

• By providing a map of the solar system

• By identifying new planets

• By explaining the universe's current structure