¿Qué pasa cuándo muere una estrella?

The video explains the life cycle of stars, starting from their formation in a cloud of gas and dust. It details the process of hydrogen fusion that leads to a star's equilibrium and its main sequence phase. The lifespan of a star is determined by its mass, with larger stars burning out faster. As stars exhaust their fuel, they evolve beyond the main sequence, potentially becoming neutron stars or black holes, depending on their mass. The video concludes with the concept of supernova explosions and the eventual fate of stars.

What initiates the birth of a star from a cloud of gas and dust?

• The cloud is illuminated by a nearby star.

• The cloud is cooled by interstellar winds.

• The cloud is struck by a meteor.

• The cloud's gravity causes it to contract and heat up.

How does the mass of a star affect its lifespan?

• More massive stars live longer because they have more fuel.

• Less massive stars live longer because they burn fuel more slowly.

• Stars with more mass live indefinitely.

• Mass does not affect a star's lifespan.

What is the main sequence phase in a star's life?

• The phase where a star is born from a nebula.

• The phase where a star explodes as a supernova.

• The phase where a star maintains equilibrium between gravity and fusion.

• The phase where a star becomes a black hole.

What happens when a star exhausts its core hydrogen fuel?

• It immediately becomes a black hole.

• It shrinks into a white dwarf.

• It expands and cools, forming a red giant.

• It explodes into a supernova.

What can form from the remnants of a massive star after a supernova?

• A new planet

• A red giant

• A white dwarf

• A neutron star or black hole