Superconducting X-ray laser reaches operating temperature colder than outer space Hardin Bitsky May 12, 2022 Nestled 30 feet underground in Menlo Park, California, a half-mile-long stretch of tunnel is now colder than most of the universe. It houses a
Superconducting X-ray laser reaches operating temperature colder than outer space Hardin Bitsky May 12, 2022 Nestled 30 feet underground in Menlo Park, California, a half-mile-long stretch of tunnel is now colder than most of the universe. It houses a
