Csours
21小时前
If those ex-soviet engineers are anything like me, they spent the whole time telling their chinese counterparts: "And i wish i had done this differently, and this, and this ...."
Grantoberhauser
13小时前
How to build the perfect space capsule:
1. Build a space capsule.
2. Throw it away.
3. Build a space capsule and fix everything about the first version.