Hubble Detects Ultraviolet Light from Early Galaxy, Shedding Light on Cosmic Reionization
By
Andrea Gianopoulos
Summary
Astronomers using NASA's Hubble Space Telescope have detected unexpected ultraviolet light from a galaxy that existed just 1.4 billion years after the Big Bang. This galaxy contains tightly clustered young stars producing ionizing light capable of transforming the opaque, neutral hydrogen gas that filled the early universe, effectively clearing our view. The discovery suggests that similar galaxies in the early universe were responsible for clearing the neutral fog of hydrogen gas during the epoch of reionization. The findings were published in the Astrophysical Journal.
Source
Twitter / XHubble Detects Ultraviolet Light from Early Galaxy, Shedding Light on Cosmic Reionizationgo.nasa.govKey quotes
· 3 pulledAstronomers using NASA's Hubble Space Telescope have found something they never expected — ultraviolet light from a galaxy that existed just 1.4 billion years after the big bang.
That galaxy contains tightly clustered young stars that produce ionizing light capable of transforming the opaque, neutral gas within and immediately around the galaxy, clearing our view.
This suggests that similar galaxies in the early universe were responsible for clearing the neutral fog of hydrogen gas that once filled the cosmos.
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