Time Before Time The ideas differ, sometimes wildly, but they all pretty much agree that the Big Bang at least happened. The Big Bang theory says that our universe began as a point of infinite gravity and density called a singularity. Then, in a trillionth of a trillionth of a trillion...
The Big Bang theory doesn't rule out the possibility that there was some pre-existing universe from which ours sprang, but if such a thing existed, it was beyond the reach of science. 关键词: Came Before BIG BANG expanding universe backwards 年份: 2019 ...
What Is The Big Bang Theory? I ORIGIN OF THE UNIVERSE | Educational Videos for C 03:15 FRUITS 🍊 | Fun Way to Build Your Child's Vocabulary 08:08 Kids vocabulary - Action Verbs - Action Words - Learn English for kids 03:41 THE MEGALODON | Educational Videos for Children 08:24...
What came before the beginning? Xuanyu Han/Getty Images It's a mind-boggling question that has intrigued scientists theologians, and the curious alike for centuries: What was before the Big Bang? Roughly 13.7 billion years ago, the entire universe existed as a singularity, a point smaller th...
What was the main element in the early universe according to the Big Bang theory? A. Oxygen B. Helium C. Hydrogen D. Carbon 相关知识点: 试题来源: 解析 C。解析:根据大爆炸理论,早期宇宙的主要元素是氢。大爆炸之后,最初形成的元素就是氢,然后通过核聚变等过程才逐渐形成其他元素。选项A氧不是...
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If that all sounds rather trippy, it is — because scientists don't yet have a way to peer back to even the instant of the Big Bang, much less what came before it. There's room to explore, though, Carroll said. The detection of gravitational waves from powerful galactic collisions in ...
While the majority of the astronomical community accepts the theory, there are some theorists who have alternative explanations besides the Big Bang— such as eternal inflation or an oscillating universe. Related: What happened before the Big Bang? You may like The history of the universe: Big ...
相关知识点: 试题来源: 解析 A 第二段具体说明"big bang" theory的内容,其中第二句"He points out that all 68 species of odontocetes (a sub-order that includes dolphins) ues sound to locate their victims",对照选项A。反馈 收藏
Some variations on the big bang go down a little smoother than the original. In the simplest version, the beginning of time is a sharp point, where everything we currently observe was mashed into a ball of energy smaller than an atom—then burst outward, duh. But what came before? Physic...