Understanding the Life and Death of Stars

What determines the way a star dies?

• The amount of mass it started with

• The number of planets it has

• Its distance from the Earth

• The color of the star

Why do massive stars have shorter lifespans despite having more fuel?

• They have less gravity

• They are further from other stars

• They can only access hydrogen in their core

• They burn their fuel at a slower rate

What happens when a giant star's fuel runs out?

• It becomes a black hole

• It collapses and causes a supernova

• It slowly fades away

• It turns into a planet

How do supernovae contribute to the creation of life?

• By spreading heavy elements essential for life

• By increasing the universe's temperature

• By creating new galaxies

• By forming new black holes

What was discovered in May 2018 regarding ancient stars?

• They created the first black holes

• They are still forming new stars

• They produced ionized oxygen 13.3 billion years ago

• They are responsible for the universe's expansion

What role did massive stars play in the early universe?

• They caused the Big Bang

• They synthesized hydrogen and helium into heavier elements

• They formed the first galaxies

• They absorbed all the light

What is happening to star formation in the universe?

• It has stopped completely

• It is declining quickly

• It is remaining constant

• It is increasing rapidly

What did the 2016 telescope network discover about the universe?

• The universe is expanding faster

• The universe has lost half its brightness in 2 billion years

• The universe is shrinking

• The universe is getting brighter

How many stars does a Milky Way type galaxy produce today compared to 11 billion years ago?

• About 70 stars per year 11 billion years ago

• About 700 stars per year today

• About 70 stars per year today

• About 7 stars per year today, 10 times more 11 billion years ago

Why is it important to understand why galaxies stop forming stars?

• Because stars are essential for life

• Because it determines the universe's size

• Because it affects the universe's temperature

• Because it influences the speed of light