¿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 are the three groups into which astronomers classify stars based on their age and size?

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Describe the process that occurs in a star's core that generates energy.

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What happens to red giants as they age?

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Explain the fate of supergiant stars when they die.

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How do the elements created in a star contribute to the formation of new stars and planets?

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