Exploring the Universe

What is the estimated diameter of the universe?

• 9.3 billion light years

• 930 million light years

• 93 billion light years

• 93 million light years

What event is believed to have marked the beginning of the universe?

• The Universal Explosion

• The Cosmic Burst

• The Big Bang

• The Great Expansion

Which of the following is NOT considered an exotic phenomenon in the universe?

• Black holes

• Neutron stars

• Dark matter

• Solar flares

Approximately how many stars are there in the Milky Way galaxy?

• 200 million

• 200 billion

• 2 billion

• 20 billion

What is a quasar?

• A region where gravity is extremely strong

• A bright object powered by a supermassive black hole

• A type of neutron star

• A rapidly spinning star emitting radiation