Exploring the Universe: Light, Distance, and Time

What does observing distant stars and galaxies allow us to do?

• Communicate with extraterrestrial life

• See them as they are today

• Travel to the past

• View them as they were billions of years ago

What is a light year?

• The speed of light in a vacuum

• The distance light travels in one year

• The time it takes for light to reach the Moon

• The time it takes for light to travel in one year

How far is Alpha Centauri from our solar system?

• 91 million miles

• 2.5 million light years

• 4.4 light years

• 10 billion light years

What is the furthest object visible to the naked eye from Earth?

• The Andromeda Galaxy

• The Hubble Space Telescope

• The Moon

• Alpha Centauri

When did the light from the Andromeda Galaxy begin its journey to Earth?

• 8 minutes ago

• 13 billion years ago

• 2.5 million years ago

• 65 million years ago

What significant event occurred around 65 million years ago?

• First human landing on the Moon

• Discovery of the Andromeda Galaxy

• Extinction of dinosaurs

• Formation of the first galaxies

What has the Hubble Space Telescope allowed astronomers to do?

• Communicate with extraterrestrial life

• Look back in time to when galaxies were forming

• Travel to distant galaxies

• Measure the speed of light

What is the James Webb Space Telescope designed to do?

• Replace the Hubble Space Telescope

• Observe the early universe and formation of galaxies

• Measure the distance to Alpha Centauri

• Travel to the edge of the universe

What advantage does the James Webb Space Telescope have over Hubble?

• It can observe in infrared wavelengths

• It can travel faster than light

• It can communicate with extraterrestrial life

• It is located on the Moon

What is the significance of observing objects as they were 13 billion years ago?

• It allows us to predict the future

• It enables time travel

• It helps us understand the early universe

• It shows us the current state of the universe