The Death of the Sun

The video explores the life cycle of the Sun, detailing its current middle-aged state and its future transformation into a red giant and eventually a white dwarf. It explains the processes of hydrogen shell burning and helium flash, and discusses the potential fate of Earth as the Sun expands. The video also speculates on the future of humanity and the solar system during these cosmic changes.

What determines the way a star dies?

• Its mass

• Its distance from Earth

• Its age

• Its color

What happens when the Sun's core runs out of hydrogen?

• It becomes a black hole

• It starts fusing helium immediately

• The Sun explodes in a supernova

• The core collapses and hydrogen shell-burning begins

What prevents the Sun from collapsing into a black hole during its red giant phase?

• The Pauli exclusion principle

• The Sun's magnetic field

• The presence of helium

• The Earth's gravitational pull

What is the 'helium flash'?

• A sudden increase in the Sun's brightness

• The expansion of the Sun's outer layers

• The ignition of helium fusion in the core

• The collapse of the Sun into a white dwarf

During the Sun's second red giant phase, what is a possible outcome for Earth?

• It will remain unchanged

• It will become a new star

• It will be engulfed by the Sun

• It will be ejected from the solar system

What is the final stage of the Sun's life?

• A black hole

• A neutron star

• A white dwarf

• A supernova explosion

Where might humanity find refuge during the Sun's red giant phases?

• On Mars

• On Venus

• In the asteroid belt

• On the moons of outer planets like Neptune and Jupiter