The oldest type of molecule in space (HeH ) Scientists believe helium hydride represents the universe's first molecular bond, but the ion has been mysteriously hard to find. Everything has a beginning. That’s true for stories, for people, for the universe and even for chemistry. The Big Bang itself produced just a handful of elements (variations of hydrogen, helium and lithium nuclei), so researchers have a pretty good sense of what the first atoms and molecules might have been. But the very first molecular bond to form, linking together atoms of different elements in a single molecule, has long been missing in action. Known as a helium hydride ion (HeH ), this conglomeration of basic bits is just a helium atom and a hydrogen’s nucleus (aka a proton) stuck together. As the first compound created in the universe, you’d expect there to be traces of it throughout the universe — but astronomers couldn’t find it. (Scientists managed to produce some in the lab in 1925, so at least they knew it wasn’t an impossible substance.) However, just as researchers wondered if they might’ve gotten things wrong about the early universe (or basic chemistry), fortune smiled on them: A paper today in Nature describes the first unequivocal discovery of the HeH molecule in space. It took precise instruments and a flying observatory to do it, but now chemists and cosmologists alike can breathe easy — and push their research in new directions. - Study24x7
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The oldest type of molecule in space (HeH+) Scientists believe helium hydride represents the universe's first molecular bond, but the ion has been mysteriously hard to find. Everything has a beginning. That’s true for stories, for people, for the universe and even for chemistry...

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The oldest type of molecule in space (HeH+)
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