What is the Universe? (Simple English)

The video tutorial explores the universe, explaining its vastness and components like planets, stars, and galaxies. It discusses the scale of the universe, from a classroom to the entire galaxy, and explains the concept of light years as a measure of distance. The video delves into the Big Bang theory, describing the universe's origins and its continuous expansion. It concludes by encouraging viewers to reflect on how scientists determine the universe's age.

What does the universe include?

• Only matter and energy

• Only planets and stars

• Everything that exists anywhere

• Only galaxies and energy

What is a solar system?

• A group of stars held together by gravity

• A collection of galaxies

• A single planet orbiting a star

• A group of planets and other bodies orbiting a star

What holds a galaxy together?

• Dark matter

• Light

• Gravity

• Magnetic forces

How do astronomers measure the size of the universe?

• In parsecs

• In light years

• In miles

• In kilometers

What is a light year?

• The distance light travels in one year

• The distance between the Earth and the Sun

• The time it takes for light to travel around the Earth

• The time it takes for light to reach the Sun

What is the Big Bang theory?

• A theory that the universe is shrinking

• A theory that the universe is made of dark matter

• A theory that the universe was formed by a giant explosion

• A theory that the universe is static

How did the universe change after the Big Bang?

• It became hotter and denser

• It began expanding and cooling

• It started shrinking

• It remained the same size