The Digital Press

Scientists have recreated helium hydride, the universe's first molecule formed over 13 billion years ago, revealing its critical role in cooling the early universe and enabling star formation.

Why it matters: Helium hydride ions helped cool primordial gas clouds, facilitating the birth of the first stars in the universe.

The big picture: This discovery refines our understanding of early cosmic chemistry and the transition from darkness to light after the Big Bang.

Stunning stat: The reaction rate of helium hydride with hydrogen remains nearly constant even at ultra-low temperatures close to absolute zero.

Commenters say: Many are fascinated by the molecule's elusive nature and extreme reactivity, noting its fleeting existence in space and challenges in studying it.