When Elon Musk and his team at SpaceX were looking to make their Falcon 9 rocket even more powerful, they came up with a creative idea — keep the propellant at super-cold temperatures to shrink its size, allowing them to pack more of it into the tanks.
"Elon Musk’s SpaceX Is Using a Powerful Rocket Technology. NASA Advisers Say It Could Put Lives at Risk." is from the May 05, 2018 Business section of The Washington Post. It was written by Christian Davenport and narrated by Sam Scholl.