PARIS: The most distant galaxy ever measured is 13.1 billion light years away, according to a new study out of Yale University.
The galaxy, dubbed EGS-zs8-1, was first detected by the Hubble Space Telescope. Immediately, it stood out to scientists as a candidate for one of the most distant sources of light ever captured.
Yale astronomer Pascal Oesch said the galaxy’s light carried signs of star formation and appeared to have traveled a really long way to get here. In other words, he said, it was interesting.
“So we took a deeper look again with the Keck ground-based telescope,” Oesch said. “In particular, Keck has this fantastic instrument, which is called MOSFIRE. This allows us to take a spectrum. A spectrum means we are essentially breaking up the light of this source in smaller pieces, in different wavelengths.”
The analysis was published in the Astrophysical Journal, but this is what his team found out: “The light of this source has been traveling to us for 13.1 billion years,” Oesch said.
Oesch said scientists have measured accurate distances for only a handful of galaxies more than 13 billion light years from Earth. This galaxy, at 13.1 billion light years, is the most distant one ever measured.
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