One just launched the world’s biggest rocket, with mixed success. The other makes small model ... upper stage, which sported ...

But pointing out that lightweight cardboard tubes can be tricky to ship without getting crushed, [Concrete Dog] has come up with HEXA, a clever model rocket kit that uses pre-scored cardstock instead.

The Space Launch System (SLS) core stage and rocket boosters have now been stood up and mated in preparation for NASA's ...