Understanding the Universe's Mysteries

The video provides an overview of the universe, explaining its definition, composition, and origin. It discusses the universe's makeup of normal matter, dark matter, and dark energy, and introduces the Big Bang Theory as the origin of the universe. The video also covers the universe's size and continuous expansion, mentioning Edwin Hubble's discovery and the concept of the Big Crunch. It concludes with interesting facts about the Milky Way and the number of galaxies and planets, encouraging viewers to explore further.

What does the term 'universe' mean?

• Everything combined into one cosmic system

• A single galaxy

• A group of planets

• A collection of stars

What percentage of the universe is believed to be dark energy?

• 100%

• 5%

• 27%

• 68%

According to the Big Bang Theory, how old is the universe?

• 13.7 billion years

• 4.5 billion years

• 10 trillion years

• 100 million years

What is the estimated diameter of the observable universe?

• 250 billion light years

• 93 million light years

• 93 billion light years

• 7 trillion light years

Who discovered that the universe is expanding?

• Edwin Hubble

• Albert Einstein

• Isaac Newton

• Galileo Galilei

What is the phenomenon called when the universe expands?

• Big Crunch

• Inflation

• Big Bang

• Cosmic Boom

What is the potential future event where the universe might stop expanding?

• Big Bang

• Big Crunch

• Big Freeze

• Big Rip

How many stars are estimated to be in the Milky Way?

• 100 billion

• 10 billion

• 100 million

• 1 trillion

How many galaxies are estimated to be in the observable universe?

• 100 billion

• 100 million

• 10 billion

• 1 trillion

As of March 21, 2022, how many exoplanets have been confirmed?

• 10,000

• 1,000

• 5,000

• 50,000