Recently, scientists have found the universe’s first type of molecule. From research and studies done by scientists show that about 100,000 years after the big bang, helium, and hydrogen mixed. They believe this created a molecule called helium hydride. This was observed by SOFIA or NASA’s Stratospheric Observatory for Infrared Astronomy. Since this molecule formed, it cooled down the universe and started the cycle of creating stars. It also was very important for everything that happened after that.