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NASA-胶水-但要使其达到银河级!💫大多数星系旋转得如此之快,以至于仅由气体和恒星产生的重力并不是e
案例简介:胶水 -- 但要让它成为银河级!💫大多数星系旋转得如此之快,以至于仅由气体和恒星产生的重力不足以使它们保持在一起。暗物质被认为是将这些星系结合在一起的隐形胶水,构成了宇宙物质的大部分。当研究人员发现一个星系缺少看不见的东西时,它有可能破坏星系形成和演化的理论。通过 @ NASAHubble收集的观测,天文学家发现这个幽灵般的星系似乎没有中心区域,螺旋臂或圆盘-包含天文学家预期的暗物质量的大约1/400。这个奇怪的星系几乎与银河系一样宽,距离我们大约7200万光年,它只包含1/200的恒星。观测到的恒星数量占了星系引力的大部分。学分: 美国宇航局,@ 欧洲航天局,STScI,沈自力 (耶鲁),彼得·范·多库姆 (耶鲁),沙尼·丹妮莉 (IAS) 图像处理: 艾丽莎·帕根 (STScI) # 美国宇航局 # 哈勃望远镜 # 无胶 # 星系
NASA-胶水-但要使其达到银河级!💫大多数星系旋转得如此之快,以至于仅由气体和恒星产生的重力并不是e
案例简介:Glue – but make it galactic-grade! 💫 Most galaxies rotate so fast that gravity generated by gas and stars alone is not enough to keep them together. Dark matter is thought to be the invisible glue that holds these galaxies together – making up the bulk of the universe’s matter. When researchers found a galaxy lacking the invisible stuff – it would have the potential to upset theories of galaxy formation and evolution. With observations collected by @NASAHubble, astronomers found that this ghostly galaxy doesn’t appear to have a central region, spiral arms, or a disk – and contains about 1/400 of the amount of dark matter expected by astronomers. Sitting almost as wide as the Milky Way galaxy and about 72 million light-years away, this oddball galaxy contains only 1/200 of the number of stars as our galaxy. The observed number of stars accounts for most of the galaxy's gravity. Credits: NASA, @EuropeanSpaceAgency, STScI, Zili Shen (Yale), Pieter van Dokkum (Yale), Shany Danieli (IAS) IMAGE PROCESSING: Alyssa Pagan (STScI) #NASA #HubbleTelescope #Glueless #Galaxy
NASA - Glue – but make it galactic-grade! 💫 Most galaxies rotate so fast that gravity generated by gas and stars alone is not e
案例简介:胶水 -- 但要让它成为银河级!💫大多数星系旋转得如此之快,以至于仅由气体和恒星产生的重力不足以使它们保持在一起。暗物质被认为是将这些星系结合在一起的隐形胶水,构成了宇宙物质的大部分。当研究人员发现一个星系缺少看不见的东西时,它有可能破坏星系形成和演化的理论。通过 @ NASAHubble收集的观测,天文学家发现这个幽灵般的星系似乎没有中心区域,螺旋臂或圆盘-包含天文学家预期的暗物质量的大约1/400。这个奇怪的星系几乎与银河系一样宽,距离我们大约7200万光年,它只包含1/200的恒星。观测到的恒星数量占了星系引力的大部分。学分: 美国宇航局,@ 欧洲航天局,STScI,沈自力 (耶鲁),彼得·范·多库姆 (耶鲁),沙尼·丹妮莉 (IAS) 图像处理: 艾丽莎·帕根 (STScI) # 美国宇航局 # 哈勃望远镜 # 无胶 # 星系
NASA - Glue – but make it galactic-grade! 💫 Most galaxies rotate so fast that gravity generated by gas and stars alone is not e
案例简介:Glue – but make it galactic-grade! 💫 Most galaxies rotate so fast that gravity generated by gas and stars alone is not enough to keep them together. Dark matter is thought to be the invisible glue that holds these galaxies together – making up the bulk of the universe’s matter. When researchers found a galaxy lacking the invisible stuff – it would have the potential to upset theories of galaxy formation and evolution. With observations collected by @NASAHubble, astronomers found that this ghostly galaxy doesn’t appear to have a central region, spiral arms, or a disk – and contains about 1/400 of the amount of dark matter expected by astronomers. Sitting almost as wide as the Milky Way galaxy and about 72 million light-years away, this oddball galaxy contains only 1/200 of the number of stars as our galaxy. The observed number of stars accounts for most of the galaxy's gravity. Credits: NASA, @EuropeanSpaceAgency, STScI, Zili Shen (Yale), Pieter van Dokkum (Yale), Shany Danieli (IAS) IMAGE PROCESSING: Alyssa Pagan (STScI) #NASA #HubbleTelescope #Glueless #Galaxy
NASA-胶水-但要使其达到银河级!💫大多数星系旋转得如此之快,以至于仅由气体和恒星产生的重力并不是e
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NASA - Glue – but make it galactic-grade! 💫 Most galaxies rotate so fast that gravity generated by gas and stars alone is not e
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