We can see things moving faster than light

The video explores the concept of galaxy distances, focusing on GNZ 11, which is 32 billion light years away despite its light taking 13.4 billion years to reach us. It explains the expanding universe, the observable universe, and the Hubble sphere. The video delves into relativity, discussing how space can expand faster than light, allowing galaxies to move away at such speeds. It also covers the cosmic event horizon and how some galaxies are beyond our reach.

How far away is the galaxy GNZ 11 currently, despite its light taking 13.4 billion years to reach us?

• 13.4 billion light years

• 25,000 light years

• 32 billion light years

• 46.5 billion light years

What is the size of the observable universe in light years?

• 14 billion light years

• 46.5 billion light years

• 32 billion light years

• 13.8 billion light years

What is the Hubble sphere?

• The boundary of the observable universe

• A region where galaxies move away faster than light

• A sphere 14 billion light years in radius

• The edge of the entire universe

Why can galaxies move away from us faster than the speed of light?

• Because they are propelled by dark energy

• Due to the expansion of space itself

• Because they are in a different dimension

• Due to gravitational forces

What happens to light emitted from galaxies moving away faster than light?

• It never reaches us

• It moves away and then comes back

• It travels in a straight line

• It gets absorbed by space

What is the speed limit according to Einstein's special theory of relativity?

• The speed of light

• The speed of sound

• The speed of expansion

• The speed of gravity

What is the cosmic event horizon?

• The limit of galaxy expansion

• A boundary beyond which we cannot receive light

• The edge of the Hubble sphere

• The boundary of the observable universe

How does the expansion of the universe affect local clusters of galaxies?

• They move closer together

• They remain unaffected due to gravity

• They expand along with the universe

• They shrink over time

What is the relationship between the Hubble sphere and the cosmic event horizon?

• They do not relate to each other

• The cosmic event horizon is inside the Hubble sphere

• The Hubble sphere is inside the cosmic event horizon

• They are the same

What is the effect of space expansion on objects within it?

• Objects get larger

• Objects remain the same size

• Objects disappear

• Objects shrink