Understanding Light and the Universe

What do we actually see when we look at stars in the night sky?

• The stars as they were in the past

• The stars as they are now

• The stars as they will be in the future

• The stars' reflections

How far away are the stars in the Big Dipper?

• 10 to 50 light years

• 79 to 125 light years

• 200 to 300 light years

• 500 to 1000 light years

What did scholars in 14th century India think of light?

• As a form of energy

• As a type of wind

• As a solid object

• As a liquid

What is the Doppler effect in relation to light?

• A change in light direction

• A change in light wavelength

• A change in light speed

• A change in light intensity

What happens to light waves as an object moves farther away?

• They become dimmer

• They become brighter

• They become longer

• They become shorter

Why was the Hubble Space Telescope built to see a portion of the infrared spectrum?

• To account for redshift in distant galaxies

• To detect black holes

• To measure the speed of light

• To observe nearby planets

What is the significance of the galaxy GNZ-11?

• It is the oldest galaxy discovered

• It is the largest galaxy known

• It is the farthest galaxy observed by Hubble

• It is the closest galaxy to Earth

What is the James Webb Space Telescope expected to do?

• Observe the surface of Mars

• Detect gravitational waves

• Observe the early universe

• Measure Earth's atmosphere

What challenge does observing distant galaxies present?

• They are too small

• They are too bright

• They are too far and require accounting for redshift

• They are too close

What is the potential future discovery mentioned in the video?

• Mapping the entire universe

• Discovering new elements

• Observing the first galaxies and stars

• Finding new planets in our solar system