Meanwhile, the star's outer layersshoot into space at millions of miles per hour The star hasexploded!Believe it or not, supernovae help life. In fact, withoutthem, the Earth would not exist. Neither would we. Here'swhy. When the universe began, it had only the three lightestelements:...
When the universe began, what time was it?Looks at the work of various physicists in the definition of time. Isaac Newton's equation for time; Relativity theory of Albert Einstein; Molding of general relativity into the style of quantum mechanics by Karel Kuchar; Time as a matter of ...
“Scientists use satellites and telescopes in space to see the high-energy light.”科学家们使用卫星和太空望远镜查看高能光,可知科学家不是用自己的眼睛,因此C错误;根据第六段中“Scientists think the smallest black holes formed when the universe began.”科学家认为最小的黑洞在宇宙开始时形成,可知D项...
No one knows exactly ___ the universe began. A. when B. where C. why D. how 相关知识点: 试题来源: 解析 A。“when”表示“什么时候”;“where”表示“哪里”;“why”表示“为什么”;“how”表示“如何”。宇宙开始的时间未知,所以用“when”。反馈 ...
In our forever changing society, it is important to have teen literature as a source where young adults can learn about and enhance their knowledge on issues related to adolescence and the progression into adulthood. Young Adult novels such as ‘Tomorrow, When the War Began’ by John Marsden ...
相关知识点: 试题来源: 解析 答案见上 结果一 题目 7. No one exactly knows when the universe began to come Into (exist) 答案相关推荐 1 7. No one exactly knows when the universe began to come Into (exist) 反馈 收藏
We live in the Internet age when much business is conducted online. How shall we mark the special occasions?__【1】__There are numerous websites available online that specialize in electronic cards,or ecards in short. __【2】__Cards have been a popular way to express one's feelings and...
Hawking is considered by many to be the g2. scientist in history since Albert Einstein. He came up with the theory that the universe (宇宙) began with the Big Bang (大爆炸) and will end in black holes. He also wrote books to help c3. people understand the universe. His most famous...
百度试题 结果1 题目Scientists wonder ___ the universe began. A. when B. where C. how D. why 相关知识点: 试题来源: 解析 C。“how”在从句中表示“宇宙是如何开始的”。“when”表示时间;“where”表示地点;“why”表示原因。反馈 收藏
In fact, it was the fi rst sci-entifi c tool. Ancient astronomers meticulously tracked the CHAPTER THIRTY- TWOWhen the Universe Began, What Time Was It?To learn how the cosmos blossomed out of a subatomic point, theorists must fi rst settle a fundamental question: is time, at the ...