Experts Explain

What is cosmology the study of?

• The study of cosmic rays

• The study of dark matter only

• The study of the universe as a whole

• The study of comets and asteroids

Who discovered that the universe is expanding?

• Edwin Hubble

• Galileo Galilei

• Isaac Newton

• Albert Einstein

What does the big bang theory state?

• The universe is contracting

• The universe has always been the same size

• The universe is made entirely of dark matter

• The universe was once smaller, hotter, and denser

What is dark matter?

• A theory that has been disproven

• A new kind of particle with mysterious properties

• A form of matter that interacts with light

• A type of energy that lights up the universe

When was dark energy discovered?

• In the 1970s

• It has not been discovered yet

• In the late 1990s

• In the early 2000s

What percentage of the universe is made up of dark energy, according to the PANTHEON+ survey?

• 33.8%

• 50%

• 66.2%

• 75%

What is the main goal of modern cosmology?

• To explore the solar system

• To measure the properties of dark matter and dark energy

• To find alien life forms

• To invent time travel

What did the PANTHEON+ survey use to find its results?

• Telescope images of galaxies

• The positions of about 1,500 supernovae

• Satellite data of the Earth's atmosphere

• Deep sea exploration