CLEAN : NASA's SOFIA airbound telescope studies galaxies through Chilean skies

The video begins with a brief introduction covering various unrelated topics. It then transitions into a discussion about significant scientific discoveries, including the first molecule formed after the Big Bang and the discovery of water on the moon. The video concludes by addressing the challenges faced by observatories, particularly those involving older aircraft that have been modified for scientific purposes.

What is the significance of the phrase 'the very first molecule that formed after The Big Bang'?

What does the text imply about the advancements in scientific discoveries over time?