query: Why energy cannot be created nor destroyed if the Universe is still growing in size?
positive_passages.docid: 2377
positive_passages.text: Is the total energy of the universe zero?
negative_passages.docid: 54636
negative_passages.text: Dark Energy / Accelerating universe: naive question
negative_passages.docid: 140005
negative_passages.text: How will a particle with energy less than $V_{\rm min}$ behave?
negative_passages.docid: 144698
negative_passages.text: Why do many people say that virtual particles do not conserve energy?
negative_passages.docid: 80749
negative_passages.text: If Energy can be converted into mass, why can it not be converted into charge?
negative_passages.docid: 100638
negative_passages.text: Why isn't the entropy of gas infinite if there are infinite microstates available?
negative_passages.docid: 57098
negative_passages.text: Is perpetual motion impossible?
negative_passages.docid: 136281
negative_passages.text: Is the universe expanding, or is everything in it getting smaller?
negative_passages.docid: 83770
negative_passages.text: Kinetic energy doesn't make sense
negative_passages.docid: 137492
negative_passages.text: Does entropy increase or decrease as our Universe is expanding?
negative_passages.docid: 99342
negative_passages.text: Given that matter cannot escape a black hole, how did the big bang produce the universe we see today?
negative_passages.docid: 44311
negative_passages.text: The Cracks in the Universe: Why are they lethal to some, but not to others?
negative_passages.docid: 155558
negative_passages.text: If energy is only defined up to a constant, can we really claim that ground state energy has an absolute value?
negative_passages.docid: 152130
negative_passages.text: Maximum size of the observable universe?
negative_passages.docid: 103492
negative_passages.text: If the Big Bang started in a state of low entropy then shouldn't the Big Crunch be in a state of low entropy also?
negative_passages.docid: 146039
negative_passages.text: Is it always possible to define energy of a system?
negative_passages.docid: 115752
negative_passages.text: What are the limits of Energy-bending?