Popular Science
BY RAHUL RAO | PUBLISHED JAN 3, 2023 12:00 PM
Until now, virtually everything the human race has ever built—from rudimentary tools to one-story houses to the tallest skyscrapers—has had one key restriction: Earth’s gravity. Yet, if some scientists have their way, that could soon change.
Aboard the International Space Station (ISS) right now is a metal box, the size of a desktop PC tower. Inside, a nozzle is helping build little test parts that aren’t possible to make on Earth. If engineers tried to make these structures on Earth, they’d fail under Earth’s gravity.