NASA tests laser welding for lunar and Martian construction after 50 years

NASA is exploring the use of laser welding for building structures on the Moon and Mars, moving away from traditional fasteners. This shift aims to enhance durability for long-term human habitats in space. Engineers from NASA and Ohio State University are testing laser welding in a simulated microgravity environment. Initial tests showed a high success rate, completing 69 out of 70 welds during parabolic flights. This marks NASA's first welding experiments in space in over 50 years, since tests on Skylab in 1973. The new approach could streamline construction and repairs in space, reducing reliance on cargo missions from Earth.