NASA estimates the size of the hole SpaceX made in the moon
Canada just cut a hole in the roof of a working nuclear reactor, hauled out eight steam generators weighing 100 tons each, and lowered new ones into the same hole, bringing the reactor back online seven months early to run another 35 years
Switzerland dug a hole the size of two soccer fields to install the world’s most powerful underground battery, able to release 1.2 GW in milliseconds and store 2.1 GWh at a multibillion-dollar price tag
