什么是星系团和宇宙大尺度结构？
What are galaxy clusters and the cosmic web?
星系聚成星系团，再连成纤维状和墙状的宇宙网，中间是几乎空旷的巨洞，这是物质在引力下演化的结果。
Galaxies group into clusters and link into filamentary walls of the cosmic web, separated by near-empty voids—the result of matter evolving under gravity.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#星系团 #宇宙网
什么是星暴星系？
What is a starburst galaxy?
星暴星系在极短时间内以远高于正常的速度制造恒星，常由星系并合触发，这种爆发通常只能维持几亿年。
A starburst galaxy forms stars at a far higher rate than usual over a short span, often triggered by mergers, and such bursts typically last only a few hundred million years.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#星暴星系 #恒星形成
什么是星系并合，对星系演化有何影响？
What is galaxy merger and how does it affect evolution?
星系在引力下相撞并合，能触发猛烈恒星形成、重塑结构，并让中心黑洞共同增长，银河系未来就将与仙女座星系并合。
Galaxies collide and merge under gravity, triggering bursts of star formation, reshaping structure, and growing central black holes; the Milky Way will one day merge with Andromeda.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#星系并合 #仙女座
银河系有多大？
How big is the Milky Way?
银河系是直径约10万光年的棒旋星系，包含上千亿颗恒星，太阳位于距银心约2.7万光年的旋臂上。
The Milky Way is a barred spiral about 100,000 light-years across, with over a hundred billion stars; the Sun sits on an arm about 27,000 light-years from the center.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#银河系 #棒旋星系
星系主要有哪些类型？
What are the main types of galaxies?
按形态可分为旋涡星系、椭圆星系和不规则星系；旋涡星系有显著的旋臂，椭圆星系则呈椭球状、恒星较老。
By shape they divide into spiral, elliptical and irregular galaxies; spirals show clear arms, while ellipticals are ellipsoidal with older stars.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#星系分类 #旋涡星系
我们在宇宙中是唯一的星系吗？
Are we the only galaxy in the Universe?
不是。可观测宇宙里就有数千亿个星系，每个都包含亿万颗恒星。
No. The observable Universe holds hundreds of billions of galaxies, each with billions of stars.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Carroll & Ostlie,《An Introduction to Modern Astrophysics》第2版,Cambridge University Press,2017
B. W. Carroll and D. A. Ostlie, An Introduction to Modern Astrophysics, 2nd ed., Cambridge University Press, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-1-108-42216-1 (2nd ed., Cambridge Univ. Press)
#星系数量 #宇宙