单选题 《复合题被拆开情况》 According to some leading researchers, the universe could end in 5 billion years. Perhaps this is too morbid (病态的) given our current situation across the world, we should not be talking about the end of the universe, but misery does love company at times. Like a constant in the universe, everything must come to an end at some point. However, the good news is that you do have time before the universe’s final act. In a research paper published in 2010 pleasantly titled "Eternal inflation predicts that time will end", researchers predict that the universe will end in about 5 billion years, ironically around the same time in which our sun is about to end. However, have you ever thought about what would cause the end of our universe? Or maybe if it would happen earlier, with some theoretical physicists saying it could happen in 2.8 billion years. 13.8 billion years ago, our universe was created after a massive bang, generating an imaginable amount of energy, spewing out the foundations of the entire universe, including you. Now, we want you to picture with the energy of the Big Bang (宇宙大爆炸), causing it to expand over billions of years. The universe is still expanding to this day at an accelerated rate. As mentioned by Thomas Kitching, lecturer in Astrophysics at University College London, "For a long time scientists, including Albert Einstein, thought the universe was static and infinite. " "Observations have since shown it is expanding, and at an accelerating rate. This means it must have originated from a more compact state that we call the Big Bang, implying that time does have a beginning. " In short, so much energy was generated in the big bang, that the planet still keeps on expanding. However, will the universe keep on expanding? Going back to our balloon example, if the balloon keeps expanding with energy/air, eventually, it will get too big and rip. Researchers believe that the same could happen to the universe in the distant future. However, it does not stop there. Multiple theories are describing how the universe will end. Some of the leading researchers believe that the universe could either shrink, decrease, or even decay.《问题》：What is shown in a research paper published in 2010?