¿Qué son las estrellas?

The video explains the life cycle of stars, starting with their formation from dust and gases. Stars are classified into three groups based on age and size: main sequence, giants, and white dwarfs. Main sequence stars, like our sun, are stable and powered by hydrogen fusion. As stars age, they become giants, expanding and cooling as they use helium. Depending on their size, they may become white dwarfs or explode as supernovae, leading to neutron stars or black holes. The elements from supernovae contribute to the formation of new stars and planets.

What is the primary composition of stars during their formation?

• Silicon and Magnesium

• Iron and Nickel

• Carbon and Oxygen

• Hydrogen and Helium

Which group do most stars, including our sun, belong to?

• Red Giants

• Main Sequence

• Supergiants

• White Dwarfs

What happens to a star when it runs out of hydrogen?

• It explodes as a supernova

• It starts using helium for nuclear reactions

• It becomes a black hole

• It turns into a neutron star

What is the fate of a red giant's core if it remains a star?

• It becomes a black hole

• It becomes a white dwarf

• It turns into a neutron star

• It explodes as a supernova

What significant event occurs when a supergiant star dies?

• It forms a planetary nebula

• It becomes a main sequence star

• It explodes as a supernova

• It turns into a red giant