暗能量

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暗能量与宇宙命运 | Shuang Wang | TEDxShahe Street
TEDx Talks· 2025-08-18 15:56
宇宙会走向什么样的终结?是大塌缩、永恒黑暗,还是被撕裂成虚无? 中山大学物理与天文学院副教授王爽,用通俗易懂的语言,带你穿越三体小说与真实天文发现,揭秘宇宙的终极命运。从宇宙加速膨胀到暗能量的神秘力量,这些看似遥远的宇宙学概念,其实和我们的存在息息相关。 让我们一起探索这片浩瀚星空的未来结局! 中山大学副教授/博导 科普作家 This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx ...
涉及暗能量、台风路径异常……2025重大科学问题、技术难题等发布
Yang Shi Xin Wen· 2025-07-06 02:42
Group 1 - The Chinese Association for Science and Technology has released significant scientific, engineering, and industrial technology issues for 2025 [1] - Ten frontier scientific issues include topics such as the topology and geometric classification of manifolds, the nature and mass origin of the Higgs particle, and the feasibility of using quasi-metals as substitutes for transition metals in precise synthesis and catalytic reactions [2] - Ten engineering technology challenges focus on integrated algorithms for complex model design, simulation, and manufacturing, as well as technologies for deep-sea mining equipment and environmental disturbance suppression [2] - Ten industrial technology issues address breakthroughs in high-end equipment for large-scale seawater desalination, improvements in the oxidation resistance of ultra-supercritical steam turbine blades, and the development of autonomous mining technologies for deep space resource exploration [2][3]
院士南疆开讲,激励边疆学子种下科学种子
Nan Fang Nong Cun Bao· 2025-06-30 14:36
Core Points - The event "Science and China" and Guangdong Science Popularization in Southern Xinjiang series was held in Kashgar and the Third Division of the Xinjiang Production and Construction Corps, featuring prominent scientists to inspire local students [2][6][70] - Over 10,000 students participated in 13 science lectures, which aimed to promote scientific knowledge and support regional development [3][4][6] - The activities align with national policies on science popularization and support for Xinjiang, emphasizing high-quality educational initiatives [5][6][71] Group 1 - The series of lectures included topics such as astrophysics, mathematics, and biodiversity, delivered by renowned academicians and researchers [9][20][37] - The lectures sparked curiosity among students, encouraging them to explore scientific fields and understand the relevance of mathematics in technology and daily life [22][58][60] - The event was supported by various institutions, including the Chinese Academy of Sciences and local educational authorities, highlighting a collaborative effort in science education [72][80][81] Group 2 - The initiative aims to enhance the scientific literacy of youth in Southern Xinjiang, providing them with access to quality educational resources [86][88] - The program is part of a broader strategy to implement technology assistance and talent development in the region, focusing on agriculture, health, and digital technology [83][85][91] - Future plans include expanding cooperation with various sectors to enrich science education and foster innovation among local students [92][94]
“宇宙之眼”将开启暗物质与银河系探秘之旅
Ke Ji Ri Bao· 2025-06-19 02:18
Core Insights - The Vera C. Rubin Observatory, named after the American astronomer, is set to unveil more cosmic mysteries with its operations beginning by the end of this year [1][2] - The observatory, with a budget of $810 million, will utilize the world's largest digital camera to conduct groundbreaking missions in astronomy [2][3] Group 1: Observatory Features - The observatory features an 8.4-meter diameter telescope that can create panoramic images of the southern sky every three days [3] - It is equipped with the largest "Legacy Survey of Space and Time" (LSST) digital camera, boasting a resolution of 3.2 billion pixels, designed for wide-field, rapid, and deep imaging [3][5] - The LSST camera will generate approximately 20 terabytes of data each night, which is 350 times the daily data output of the James Webb Space Telescope [3] Group 2: Scientific Missions - The observatory aims to map the universe, track dark matter, discover millions of new solar system bodies, and provide early warnings for near-Earth objects [2][6] - It will explore the mysteries of dark matter and dark energy, potentially revealing the structure of the universe and the nature of these elusive components [6][8] - The observatory will also enhance understanding of the solar system and the Milky Way by identifying near-Earth asteroids and reconstructing the galaxy's evolutionary history [7][8] Group 3: Data Accessibility and Collaboration - All observational data, including calibration images and real-time alerts, will be made freely available to the global scientific community, promoting collaboration between professional and amateur astronomers [7][8] - The observatory's advanced software processing system will utilize statistical analysis and machine learning to identify anomalies in astronomical data, generating over 8 million alerts each night [5][6]
从“一锅基本粒子粥”到星辰大海
Ren Min Ri Bao· 2025-06-12 22:10
Core Viewpoint - The book "The Story of the Universe: An Exploration Journey through Stars and Seas" by Feng Lei presents the latest advancements in cosmology, emphasizing the evolution of human understanding of the universe from vague speculation to precise measurement and verification [2][3][4]. Group 1: Historical Context - In the early 20th century, physicist Kelvin claimed that physics was complete, but challenges like the Michelson-Morley experiment and the ultraviolet catastrophe of black body radiation led to revolutions in physics, namely relativity and quantum mechanics [2]. - In the early 21st century, scientists identified new challenges in physics, categorized as "two dark, one black, and three origins," which include dark matter, dark energy, black holes, and the origins of the universe, celestial bodies, and life [2]. Group 2: Cosmological Concepts - The book discusses how measurements of cosmic expansion led to the Big Bang cosmology model, predicting that the universe originated from a monumental explosion 13.8 billion years ago, evolving from a primordial state of basic particles to stars and galaxies [3][4]. - The narrative emphasizes the philosophical implications of cosmology, linking the vastness of the universe to the fundamental particles that constitute it, thus presenting cosmology as a unified field of study [3]. Group 3: Modern Cosmology - Modern cosmology has transitioned from philosophical speculation to an independent scientific discipline, with the Big Bang model providing numerous testable predictions that have been increasingly confirmed by precise experimental measurements [4][5]. - The book aims to make complex astrophysical processes and new cosmological knowledge accessible through descriptive language, avoiding mathematical formulas to engage a broader audience [5].