第七十八章 耀星(2 / 2)
我真的只想回地球啊
长桥尽头
1130 字
2022-10-02
你们是用什么技术从跨越如此遥远的技术看到地球上景象?”
对于杨猛的问题,
小光立刻便有了回答:
“准确来说是被看到,而不是我们主动要去观测的?”
“被看到?”
想到之前自虚拟世界中看到的那些奇怪人形生物,
而它们身上各个时代缝合起来的服饰,
对于小光的这个回答,杨猛的想到了什么,却又不敢确认。
“我们利用弦论分析出了,由引力透镜折射过来的光,并分析出了里面遗留的信息?”
听到这样的回答,杨猛有些无法保持平静,
便是他身体里的小伊也对小光这样的回答保持怀疑。
在地球上时,
一些喜爱天文的网络社区便经常交流一个问题,
从地球散射出的信息,会不会被距离地球极为遥远文明所看到,
像是地球反射出的太阳光,
在宇宙中以光速前行,
若是在两千光年外存在一个高等文明,能解析光所传递的信息,
那么哪里的文明很有可能看到地球两千年前的景象。
在这种情况下,
地球上所发生的所有事情对于整个宇宙来说将是一个透明的存在,
然而实际情况却并非如此,
信息的载体会湮灭,以光的传递会因为各种物质的阻挡而消失,
就像在地球上打开一个手电筒,
其所散发的光芒无法传递到月球一样,
人类所生活的天空看起来十分的空荡,当没有云层时可以直接看到月球,
但地球大气中密布着人类看不到的各种气体分子,
当光碰到这些元素时,或被吸收又或是被遮挡散射,
总之在光传递出一定距离后便会出现衰减,
而当光线进入宇宙空间后,也不是畅通无阻的,
太空虽然是“真空”环境但却不是完全意义上的真空,
宇宙中有着恒星喷发出带电粒子流,
这些带电粒子流中的一部分微小粒子还带有质量,
随着距离太阳越来越远,速度也越来越慢,
最终在太阳的行进方向上,与银河系空间形成一个像是透明盾牌的高温粒子激波层。
而当光线碰到这些东西后,也会出现衰减,
若是光线离开地球,
宇宙中环境便更为复杂,
大质量天体会对光产生引力上的扭曲,
尘埃物质会阻挡光线的前进,
各种天体也会遮挡光线的存在,
在这种情就算一颗恒星的光线传递出2000光年,
这颗恒星产生的光芒也开始闪烁,
更何况是一个行星只是反射了太阳光,
这些反射出的光子最终有多少传递到2000千光年外,已经是个未知数了。
而鲁坦星所在的星系在5.6亿年前,虽然距离太阳西更近,
也有着大质量恒星的引力透镜效应,汇聚了一部分来自地球的光线,
但想要看到地球上的景象依旧十分困难,
更何况是现在,
鲁坦星如今距离地球12.36光年,
也没有其他恒星作为引力透镜来观察地球……
“等等!鲁坦星旁不是有一颗质量恒星吗?”
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