New COMAP radio survey will peer beneath the 'tip of the iceberg' of galaxies to unveil a hidden era of star formation. Sometime around 400 million years after the birth of our universe, the first stars began to form. This marked the end of the universe's so-called dark ages, and a new light-fill
A new Caltech project, called COMAP, will offer us a new glimpse into the early epoch of galaxy assembly.
Sometime around 400 million years after the birth of our universe, the first stars began to form. This marked the end of the universe’s so-called dark ages, and a new light-filled era began. Over time, more and more galaxies began to take shape and served as factories for churning out new stars. This process reached a peak approximately 4 billion years after theLuckily for astronomers, this bygone era can still be observed.
. Based on observations taken one year into a planned five-year survey, COMAP set upper limits on how much cold gas must be present in galaxies at the epoch being studied, including the ones that are normally too faint and dusty to see.
COMAP works by capturing blurry radio images of clusters of galaxies over cosmic time rather than sharp images of individual galaxies. This blurriness enables the astronomers to efficiently catch all the radio light coming from a larger pool of galaxies, even the faintest and dustiest ones that have never been seen.
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