Absolute zero is the point at which all molecular motion stops .
.
In this record-breaking experiment, scientists trapped a cloud of around 100,000 gaseous rubidium atoms in a magnetic field inside a vacuum chamber. Then, they cooled the chamber way down, to around 2 billionths of a degree Celsius above absolute zero. To get even colder, they needed to mimic deep-space conditions. So the team took their setup to the European Space Agency's Bremen drop tower, a microgravity research center at the University of Bremen in Germany.
.
By dropping the vacuum chamber into a free fall while switching the magnetic field on and off rapidly, allowing the BEC (Bose - Einstein's Condensate) to float uninhibited by gravity, they slowed the rubidium atoms' molecular motion to almost 𝗡𝗼𝘁𝗵𝗶𝗻𝗴.
