Exploring the Origins of Supermassive Black Holes

Why is looking at stars considered a form of time travel?

• Because stars move faster than light

• Because light from stars takes time to reach us

• Because stars emit time-travel particles

• Because stars are portals to the past

What was perplexing about the supermassive black holes discovered in 2017?

• They emitted no light

• They were found in the Milky Way

• They existed when the universe was still young

• They were made of antimatter

What is a quasar?

• A type of star

• A type of galaxy

• A small black hole

• A massive beam of light from a supermassive black hole

What is the significance of GNz7q?

• It may be the first observed supermassive black hole growing into a quasar

• It emits no radiation

• It is the largest black hole ever discovered

• It is the closest black hole to Earth

What is accretion in the context of black holes?

• The process of black holes shrinking

• The destruction of stars by black holes

• The gravitational accumulation of particles into massive objects

• The emission of light from black holes

What is the cosmic dawn?

• The creation of the Milky Way

• The moment when the first stars and proto-galaxies formed

• The time when black holes stopped forming

• The end of the universe

What are primordial black holes?

• Black holes formed from dying stars

• Black holes that existed before the big bang

• Black holes that formed within the first second after the big bang

• Black holes that emit no light

What does the direct collapse theory suggest?

• Black holes are remnants of ancient stars

• Dense gas clouds collapsed directly into black holes

• Black holes form from the collision of galaxies

• Black holes form from the explosion of stars

What is the Eddington limit?

• A limit on the distance light can travel

• A limit on the size of black holes

• A theoretical limit on how fast a black hole can gain mass

• A limit on the number of stars in a galaxy

What is the most likely process for the formation of supermassive black holes according to recent observations?

• They form from the collision of stars

• They form from the gravitational accumulation of space dust and stars

• They form from the cooling of the universe

• They form from the explosion of galaxies