<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["es", "en"].<end_of_turn>
<start_of_turn>user
¿Por qué, si las estrellas murieron hace millones de años, siguen brillando en el cielo por la noche?<end_of_turn>
<start_of_turn>model
Do we see ghosts in the night sky? No ! However, it is true that some of the stars we contemplate have ceased to shine a long time ago. There is actually nothing supernatural about this phenomenon. The distances between stars or galaxies are so great that light (which has a colossal speed) must travel for thousands, even billions of years to cross them. This is also why distances are measured in light years. So when we look at very distant objects, we see them as they were when they emitted the light we receive today. The Sun is 8 light minutes from Earth. Its light therefore takes 8 minutes to reach us. The closest star to the Sun is just over 2 light years away. And the Andromeda Galaxy, neighboring the Milky Way, is 2 million light years away. If a star died in this galaxy, we would see it go out in 2 million years!<end_of_turn><eos>