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Heavy Hydrogen in Early Universe Challenges Pristine View
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In Short: University of Arizona astronomers have discovered heavy elements in the early universe, challenging the long-held belief that the cosmos was initially composed solely of hydrogen and helium.
The researchers, publishing in Nature Astronomy, observed that heavy elements like oxygen and carbon existed just 500 million years after the Big Bang, when the universe was only about 3% of its current age.
Lead author Yongda Zhu explained, “We observed that heavy elements escaped from galaxies very, very early in cosmic time.” Zhu and his team used galaxies as background light sources to detect the absorption patterns of specific elements.
This finding indicates that the early universe was more complex than previously thought, with processes like baryon cycling spreading heavy elements throughout the cosmos.
The discovery of heavy elements in the early universe also sheds light on the formation of the first stars. Astronomers believe these stars were likely massive, formed from the abundant hydrogen available in the infant cosmos.
The Nancy Grace Roman Telescope, launched by NASA on a SpaceX Falcon Heavy rocket, will further explore these mysteries, building on the groundbreaking JWST data.
CEC Commissioner Nancy Skinner noted, “Funding made through the Clean Transportation Program, along with significant investment from other public and private sector partners, has made California the nation’s leader in EV charging and hydrogen refueling infrastructure.”
What this adds
These findings challenge the notion of a pristine early universe composed solely of hydrogen and helium, as previously thought.
Background
These discoveries challenge the notion of a pristine early universe composed solely of hydrogen and helium.
What's confirmed
- The researchers, publishing in Nature Astronomy, observed that heavy elements like oxygen and carbon existed just 500 million years after the Big Bang, when the universe was only about 3% of its current age.
- Lead author Yongda Zhu explained, “We observed that heavy elements escaped from galaxies very, very early in cosmic time.” Zhu and his team used galaxies as background light sources to detect the absorption patterns of specific elements.
- This finding indicates that the early universe was more complex than previously thought, with processes like baryon cycling spreading heavy elements throughout the cosmos.
- The discovery of heavy elements in the early universe also sheds light on the formation of the first stars. Astronomers believe these stars were likely massive, formed from the abundant hydrogen available in the infant cosmos.
- The Nancy Grace Roman Telescope, launched by NASA on a SpaceX Falcon Heavy rocket, will further explore these mysteries, building on the groundbreaking JWST data.
What's still developing
- Plasma born of heavy hydrogen blooms into brilliant pink, roiling and writhing around the doughnut-shaped chamber.
- This planetary realignment also triggered the Late Heavy Bombardment period about 4 billion years ago, when Earth experienced some of its largest impacts.
- Earth and Venus formed close to the Sun, where solar winds stripped their atmospheres of hydrogen and helium.
- See Also Your Smartphone Needs Rare Earth Elements and China Holds The Monopoly Access to Rare Earth Elements Could Lead to a Trade War In their analysis of the JWST data, the researchers found evidence that a process called baryon cycling helped spread heavy elements throughout the early universe.
- “Not only were the galaxies producing these elements, but they were also dispersing them, possibly seeding other galaxies.” At the top of the periodic table sit the simplest and lightest elements: hydrogen and helium.
- Among those JWST findings is the emerging picture of a much more complex early universe than the pristine clouds of helium and hydrogen astronomers expected to find.