Helium, the second most abundant element in the universe, is usually found within stars or planets. But now, physicists at the National Astronomical Observatory of Japan have discovered a way to measure helium in distant galaxies. The research could provide insight into why the universe exists, and how it formed and evolved.
Scientists have long believed that the universe began with a “Big Bang” some 13.8 billion years ago. In this explosion, substantial amounts of helium were created alongside other elements like hydrogen. However, it was not until recently that astronomers had the technology necessary to detect these elements in distant galaxies.
Using an instrument called Subaru Telescope Infrared Spectrograph-2 (SIRIS-2), the team observed several galaxies, one of which was a mechanism known as emission lines. These lines of light, caused by the galaxies’ ionized helium atoms, allowed the team to measure the atoms’ emission strength and hence the amount of helium present in the galaxy.
The researchers noted that their findings highlighted the unique environment of ancient galaxies. By studying the composition of these galaxies, scientists may be able to better understand why the universe exists and how its structure and elements evolved over time.
Furthermore, the team suggested that their findings could help explain why some elements, such as carbon and oxygen, are only present in certain galaxies. By measuring the concentration of helium, scientists could determine where certain elements are most likely to be produced in the universe – paving the way for further exploration of its contents.
Until now, helium has only been measured in galaxies within our own Milky Way. But thanks to the team’s findings, the element can now be measured in thousands of galaxies farther away. This could potentially revolutionize our understanding of how the universe formed, and why it both exists and continues to expand.
All in all, physicists may have just unlocked a major clue into why the universe exists. By measuring helium in distant galaxies, scientists could gain valuable insight into the nature and composition of the universe. What’s more, the team’s findings could lead to further exploration of the elements and structures in our universe.
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