Quiz on the Universe and Cosmology

What is the universe made up of?

• Just dark matter

• Only stars and planets

• Galaxies

• A single planet

What is the study of the universe called?

• Geology

• Astronomy

• Cosmology

• Astrophysics

How old do most cosmologists believe the universe is?

• 13.8 billion years

• 4.5 billion years

• 10 billion years

• 20 billion years

What theory explains the beginning of the universe?

• The Big Crunch

• The Big Bang

• The Oscillating Universe

• The Steady State

Who proposed that the universe began as a single point that rapidly expanded?

• Albert Einstein

• Nicolas Copernicus

• Edwin Hubble

• Georges Lemaître

What is a light-year?

• A type of galaxy

• A measure of time

• The distance light travels in a year

• A unit of mass

What did Edwin Hubble discover about galaxies?

• They are stationary

• They are moving away from Earth

• They are all the same size

• They do not exist

What is dark matter?

• Matter that is visible through telescopes

• Matter that does not emit or reflect radiation

• Matter that is only found on Earth

• Matter that emits light

What mysterious force is believed to be causing the universe to expand faster?

• Gravity

• Cosmic radiation

• Dark energy

• Dark matter

How long did it take for stars and galaxies to form after the Big Bang?

• 9 billion years

• 400 million years

• 1 billion years

• 13.8 billion years