A Complete Collection of 100000 Whys
Fav十万个为什么
为什么宇宙膨胀？
1、宇宙膨胀是因为大爆炸理论。宇宙起源于一个极热、极密的状态，随后迅速膨胀并冷却，形成了我们今天所见的宇宙。
2、观测证据支持宇宙膨胀。通过红移现象，科学家发现远处星系的光波长变长，表明它们在远离我们，这证明了宇宙正在膨胀。
3、暗能量是宇宙膨胀的主要驱动力。暗能量是一种神秘的力，占宇宙总质能的约68%，它推动着宇宙加速膨胀。
4、宇宙膨胀的速度是均匀的。无论观测者位于宇宙的哪个位置，都会发现宇宙膨胀的现象，这表明膨胀是宇宙的普遍规律。
5、宇宙膨胀的历史可以通过宇宙微波背景辐射来研究。宇宙微波背景辐射是宇宙大爆炸的余晖，它的研究帮助科学家理解宇宙膨胀的早期历史。
总之，宇宙膨胀是宇宙大爆炸的延续，由暗能量驱动，并通过观测证据和科学理论得到支持，它揭示了宇宙的动态演化过程。
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