The European Southern Observatory (ESO) recently announced that its Alma telescope in Chile has collected a rare data which for the time has provided astronomers first glimpse at the interior of distant galaxies.

According to an article in the Monthly Notices of the Royal Astronomical Society, observations from the Atacama Large Millimeter/submillimeter Array (Alma) allowed astronomers to see how the first galaxies evolved. They were also able to see how the galaxies cleared the cosmic fog during the era of reionization.

Study co-author Andrea Ferrara said, "This is most distant detection ever of this kind of emission from 'normal' galaxy, seen less than 1 billion years after the Big Bang. For first time, we are seeing early galaxies not merely as tiny blobs, but as objects with internal structure".

The findings of the study published in Monthly Notices of the Royal Astronomical Society, shed light on a time in the history of the cosmos that has been shrouded in mystery.

Scientists are usually found very keen to look back in time and understand this epoch in the universe's history, because learning how these early galaxies formed could shed light on the evolution of the cosmos. They do this by using very powerful telescopes.

Many researchers have focused on extremely bright objects in the distant past, but for this paper, scientists wanted to examine a dimmer, more 'normal' galaxy.

The study authors stated that our ALMA observations are directly probing such early phases of galaxy formation, in which both stellar feedback and gas accretion are at work.