Radio images of galaxies
Also, for image production, more than four petabytes of raw data, equivalent to around one million DVDs, have been captured and processed.
“However, our images are so deep that most of the objects in them are galaxies like our Milky Way, which emit faint radio waves that track continuous star formation,” Best added.
“The combination of LOFAR’s high sensitivity and the vast area of sky covered by our survey enabled us to discover tens of thousands of galaxies like the Milky Way, far in the far distance to the universe,” Best said.
“Light from these galaxies travels for billions of years to reach Earth, and this means that we see galaxies as they were billions of years ago, when they formed most of their stars,” Best continued.
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Source :” the seventh day ”