IF NASA PLANS to send robots to other planets, it’s going to need some new designs: ones that are easy to land, easy to move around, and easy to fix. That means they probably won’t look like a bipedal T-1000 chasing the one hope for mankind. They probably won’t even look like the four-legged galloping critters Boston Dynamics is building. Nope. Those robots will look like a hexahedral tent stripped of its fabric.