晨间信号Morning Signal
《新科学家》 第3603期 · 2026年7月11日 · 中文解读

太空拥堵:行星引力多大才能阻止太空旅行?

Almost the last word
约 8 分钟The back pages在小程序里点播,20 到 60 分钟做好
这篇讲什么
本文探讨了行星引力达到何种程度会使太空旅行变得不可能,并讨论了化学火箭、核动力火箭、电磁发射和太空电梯等可能的解决方案。
原文开头
Is a bumblebee like this one able to communicate with a bee of another species? Space jam How big would a planet have to be before its gravity made space travel impossible for the inhabitants? thick atmosphere above was the entire universe, heated and lit by some external, unknowable (divine?) source. Alex McDowell London, UK When lifting off in a space rocket, on a planet with strong gravity, the problem would be the weight of the fuel. If gravity were more than about twice that of Earth’s, lifting off using the chemical rockets we currently have would be practically impossible. Eric Kvaalen Les Essarts-le-Roi, France Depends what you mean by “impossible”. …
摘自《新科学家》(New Scientist)第3603期 · 2026年7月11日。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
晨间信号小程序码
微信扫码,在小程序里听完整版
不用登录先听一篇 · 或在微信搜索小程序 晨间信号
同期其他文章