Name: これまでに測定された中で最も遠い銀河 (The Most Distant Galaxy Ever Measured)
Uploaded: 2021-01-14T04:59:03.000Z
Duration: 4 min 24 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Only six hundred million years after the big bang, the universe was in a fog.

this is what the universe looked like before any galaxies had formed

When the universe cooled down after the Big Bang

This dark age ended when the first stars formed and their intense  ultraviolet radiation

These hot young stars blew away the cosmic fog of hydrogen gas with ultraviolet radiation

and these stars formed into the very first galaxies.

astronomers announced a measurement of one of the first galaxies

Sensitive instruments on the European Southern Observatory's Very Large Telescope

of a galaxy first imaged by the Hubble Space Telescope in January, 2010

Starting with a new Ultra Deep Field image taken in January, 2010,

astronomers looked at every faint galaxy within it

these faint galaxies were among the first in existence.

candidates for further study with the ESO SINFONI spectrograph were selected.

Lying in a very obscure region of the Ultra Deep Field

the ESO astronomers pointed the Very Large Telescope spectrograph

at one of the faintest objects they could see in the image.

this galaxy was once exceedingly bright in the ultraviolet,

but by the time it's light traversed the observable universe to land on our detectors,

its photons had been diminished to a faint, red glow.

was collected for over sixteen long hours resulting in a spectrum

when the cosmos was still in its infancy,

and its redshift is the largest ever recorded

Looking at galaxies this remote is very difficult,

but they're crucial to our understanding of how galaxies  came into existence

early in the lifetime of the universe of came as a surprise

This distant galaxy not only helped clear the early hydrogen fog  blanketing the universe,