A Complete Collection of 100000 Whys
Fav十万个为什么
为什么宇宙在不断扩大？
1、宇宙的膨胀是由爱因斯坦的广义相对论预言的，该理论指出宇宙的膨胀是由物质和能量的分布引起的。
2、大爆炸理论表明，宇宙起源于一个极端炽热和密集的状态，随后迅速膨胀并冷却至今。
3、观测到的遥远星系的光谱红移现象表明，这些星系正在远离我们，这直接支持了宇宙膨胀的证据。
4、宇宙膨胀的速度被称为哈勃常数，不同观测方法得到的哈勃常数略有差异，但都表明宇宙在加速膨胀。
5、暗能量的存在被认为是宇宙加速膨胀的主要原因，暗能量是一种神秘的力，占宇宙总质能的约68%，但其本质仍不清楚。
总之，宇宙的不断扩大是由大爆炸理论、广义相对论、光谱红移观测、哈勃常数以及暗能量的共同作用所解释的。
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