What is the name of the theory that explains the origin of the universe?

• The Steady State Theory
• The Panspermia Theory
• The Big Bang Theory
• The Oscillating Theory

What is considered the strongest evidence supporting the Big Bang theory?

• The existence of black holes
• The flat shape of galaxies
• The Cosmic Microwave Background (CMB)
• The formation of planets

The Big Bang theory states that the universe is currently shrinking.

According to the Big Bang theory, which two elements were the most abundant in the early universe after Big Bang Nucleosynthesis?

• Carbon and Oxygen
• Iron and Nickel
• Hydrogen and Helium
• Gold and Silver

According to the Big Bang model, the early universe was in a state that was extremely:

• Cold and empty
• Hot and dense
• Filled with solid matter
• Static and unchanging

The universe is constantly expanding.

Which astronomer is primarily credited with establishing the relationship between galactic distance and recessional velocity, providing strong evidence for expansion?

• Isaac Newton
• Albert Einstein
• Edwin Hubble
• Stephen Hawking

What is the term for the phenomenon where light waves from a source moving away from an observer are stretched to longer wavelengths?

• Redshift

According to Hubble's Law, if a galaxy is farther away from us, its recessional velocity is generally what?

• Slower
• Faster
• The same
• Unrelated to distance

What galaxy do we live in? (Hint: named after a sweet treat)

• Milky Way

Which of the following best describes a galaxy?

• A single star
• A collection of planets only
• A large group of stars, gas, and dust
• A small cloud of dust

The Sun is a planet.

What is the name of the force that keeps the planets orbiting around the Sun?

• Gravity

Which of the following is NOT a planet in our Solar System?

• Mercury
• Venus
• Moon
• Mars

Black holes can form from very massive stars after they die.

What is the age of the universe approximately, in billions of years? (Write the number only)

• 13.8

The Solar System formed before the Big Bang.