Lab material is about 3 billion times colder than deep space scienceblog.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from scienceblog.com Daily Mail and Mail on Sunday newspapers.
A magnet made out of ytterbium atoms is only a billionth of a degree warmer than absolute zero. Understanding how it works could help physicists build high temperature superconductors