Jenny Bergner

The laws of chemistry get pushed to nan limits successful Jenny Bergner’s astrochemistry laboratory astatine nan University of California, Berkeley, wherever she is pondering immoderate of nan biggest questions successful nan universe: How do planets form? And really did life originate successful nan first place? To do so, she leads a squad studying nan exotic chemistry that happens nether nan crushing acold and near-perfect vacuum of interstellar space.

Using observatories specified arsenic nan James Webb Space Telescope and nan Atacama Large Millimeter/submillimeter Array successful Chile, Bergner’s group collects nan spectral fingerprints of molecules that are coming successful environments wherever planets are forming. She complements nan scope information pinch laboratory experiments, placing molecules successful an ultracold, ultralow-pressure vacuum to shape disordered, porous ices akin to those recovered successful space. Next she and her co-workers bombard that crystal pinch photons to mimic nan radiation of interstellar space. “Then we tin understand, astatine a molecular level, what reactions are taking place,” she says. These reactions could power really planetary bodies shape arsenic their molecular components commencement to coagulate.

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Christie Hemm Klok

Bergner’s investigation came into nationalist position successful 2023, erstwhile she and a workfellow published a insubstantial successful Nature offering caller reasoning for nan behaviour of ‘Oumuamua, nan first interstellar entity ever observed passing done our star system. It puzzled astronomers because it accelerated arsenic it near nan star strategy successful a measurement that comets, for example, typically do not. Scientists speculated astir exotic explanations, including alien spacecraft. Bergner’s reply was little melodramatic and, to her, acold much satisfying: hydrogen gas, trapped wrong ‘Oumuamua’s icy interior by cosmic radiation complete millions of years, warmed up arsenic nan entity passed adjacent nan sun and escaped, propelling nan entity forward. No mysterious reasoning required—just nan rules of chemistry playing retired successful interstellar conditions.

“Saying thing is caused by magic is simply a overmuch little absorbing mentation to me,” Bergner says. The thrill of discovery, she adds, comes from utilizing nan rules of subject to explicate nan phenomena that we see, nary matter really strange.

This article is portion of “The Young American Scientists,” an editorially independent task that was produced pinch financial support from Regeneron.