<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["en", "en"].<end_of_turn>
<start_of_turn>user
Will the universe end?<end_of_turn>
<start_of_turn>model
Today, we think that the Universe will not end, in other words that it will continue forever. Better still, the Universe, which is expanding today, should continue to inflate eternally like a balloon. It should therefore not, as some astronomers thought not long ago, stop its expansion and begin to collapse on itself, finally imploding in a “big crunch”, the opposite of the big bang.

However, there will only be a “big crunch” if the Universe contains enough matter. So, when the Universe reaches the end of its expansion, it will collapse on itself under the effect of gravity, this phenomenon being due to all the matter that this universe 'contained'. In our time, we don't see much visible matter in the cosmos..., but we pretend that some still exists but that it is not seen like black dwarfs - the post-white dwarf stage - which went out...<end_of_turn><eos>