Astronomers find Giant Ancient Galaxies – Secrets of the Universe


In the last few decades, astronomy has taken massive leaps compared to its previous capabilities. Scientists are now looking farther into the cosmos than anyone could have imagined. The tool that more or less started the grand observation came in the form of the Hubble Space Telescope which launched in 1990.

Secrets of the universe

Astronomers have a main goal for the observation of the universe. This is to uncover how it formed so that they can explain the many processes that eventually form life. Unfortunately, Hubble cannot provide many pieces to this particular puzzle.

Since 1990, quite a few surface-based observatories have been constructed. These pack more power than Hubble and have made it more or less obsolete. As it will even get a replacement in the years to come.

Detecting early galaxies

Astronomers from the Institute of Astronomy, Tokyo, have led an international team that has made a breakthrough. They have uncovered 39 ancient galaxies that have the potential to change many views on cosmology.

The galaxies have escaped discovery so far due to the fact that they emit dim light in long wavelengths. With Hubble having difficulties in catching the light waves, scientists relied on the Atacama Large Millimeter Array for a more efficient reading.

The ancient galaxies are believed date back from the first 2 billion years of the universe’s existence. It has been calculated that the universe is 13.7 billion years old. The very old galaxies are also believed to be the largest in existence. At least so far.

What does this mean?

Because these galaxies are so old and massive, their properties defy what is known about cosmology. There are many factors in dispute here, but the two largest ones are black holes and invisible dark matter.

Both are believed to influence gravity within a galaxy. With theories stating that the link between them is near symbiotic. These powerful forces should exist on massive scales in the 39 ancient galaxies and their effects create more and more questions. These questions break the basic understanding that science has on the universe.


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