Understanding Light Years and Stars

The video explores the vastness of outer space, explaining how humans have learned about it by observing the sky. It discusses the immense distances between celestial bodies, the speed of light, and the concept of light years. The video also covers the lifecycle of stars and provides information about Jupiter's Great Red Spot, a massive hurricane larger than Earth.

How have humans traditionally learned about outer space?

• By reading ancient texts

• By traveling to different planets

• By using modern technology

• By observing the sky

If Earth were the size of a small ball, how far would the Sun be in this scale?

• 5 meters away

• 10 meters away

• 20 meters away

• 50 meters away

Why do some points of light in the night sky appear as single points?

• They are groups of billions of stars

• They are very close to Earth

• They are planets in our solar system

• They are reflections of the Moon

What is the speed of light in kilometers per second?

• 450,000 km/s

• 600,000 km/s

• 150,000 km/s

• 300,000 km/s

How long does it take for light to travel from one place to another in the universe?

• Millions and billions of years

• A few minutes

• A few seconds

• A few hours

What is a light year?

• The distance between Earth and the Moon

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

• The distance light travels in one year

• The time it takes for light to reach the Sun

How far is a light year in kilometers?

• 1 trillion kilometers

• 5 trillion kilometers

• 9.5 trillion kilometers

• 15 trillion kilometers

What might happen to a star that we can see right now?

• It might have changed color

• It might have become a planet

• It might have burned out and collapsed

• It might have moved closer to Earth

What is the closest star to our Sun?

• Betelgeuse

• Alpha Centauri

• Sirius

• Proxima Centauri

What is the Great Red Spot on Jupiter?

• A hurricane larger than Earth

• A massive ocean

• A giant crater

• A large volcano