Edwin hubble

Contributions on the expansion of the Hubble universe

In this blog we have already talked about numerous topics related to astronomy. Among them we find the solar system, Mars, Mercury, Venus, Jupiter, Saturn, etc. However, we have not yet talked about the scientists who have advanced this science thanks to their discoveries. Therefore, today we bring you the biography of Edwin Powell Hubble. This is a scientist known as the father of modern cosmology and who has made a number of important discoveries.

Do you want to know all the contributions to astronomy of Edwin Hubble? In this post you can know everything. You just have to keep reading 🙂

Edwin Hubble Overview

Hubble work

The discoveries of this scientist are those that have revolutionized the way of looking at the universe. He was born in 1889 and, although it seems a bit crazy, he started in the world of the lawyer. The laws of justice had little to do with the laws of physics and the universe. However, several years later, he returned to obtain a doctorate in astronomy. Thanks to the use of the telescope, Edwin Hubble was able to discover a multitude of new galaxies in 1920.

Until that moment it was only thought that we were in a finite universe where the limit lay in the Milky Way. Thanks to the discovery of many others, the understanding of the universe became easier. The human being It is by no means the center of the universe. What's more, we are nothing more than small fleas within a large territory.

Most important discoveries

Edwin hubble

One of the observations he made showed that the nebulae they were at an enormous distance. This research was done in 1925 and that is when it was seen that the nebulae were almost a million light years away and that, therefore, they could not be part of the Milky Way.

Another of the most important discoveries that Hubble had was after the investigation of the various Cepheid stars found in the Andromeda Nebula. Andromeda is the neighboring galaxy that we have and that will inevitably engulf us within billions of years.

Already at this time there were great discoveries about super massive black holes and the theory that all galaxies in the universe have one of them at their center. Yes, as you are reading. Those super massive black holes capable of swallowing everything around and making it disappear is what governs the center of the Milky Way, our galaxy. However, there is nothing to worry about. The disappearance of human life is present in a multitude of ways. Or because of the disasters of climate change, the end of the life of the Sun, the fall of a meteorite, solar storms, etc.

All this was discovered by Hubble in the year 1920. By learning more about the dynamics of the universe, he was able to see how the universe is expanding and from there comes the Hubble constant, which is the one used in physics and astronomy to describe the expansion rate of the universe.

Contributions to astronomy

Hubble discoveries

Thanks to the creation of the Hubble constant, it has been possible to calculate how long the universe has been expanding in order to know its age. Big Bang Theory tells us that the known universe began from a great explosion that released a large amount of contained energy. The age of the universe is 13.500 billion years and this was discovered by Edwin Hubble.

In addition, with this data he discovered that the universe contains dark energy. This type of energy is the cause that galaxies are constantly separating from each other. It is also the one that "pushes" the galaxies so that the universe continues to expand continuously.

Edwin Hubble has managed to capture the first phases that a planet has when it begins to form. This data was obtained thanks to the taking of different images of a disk of dust and gas that exists around a newly born star and that acquires more density. When an object acquires more density, it allows the other objects around it to be grouped little by little by an increase in the force of gravity. This is how a planet is built.

For Hubble, one of his greatest contributions to science was the discovery of the organic molecule in the atmosphere of an exoplanet.

Edwin Hubble's theory

Hubble Bio

Now we will go on to describe in depth what is the theory that made Edwin Hubble famous. And is that his theory is the protagonist of Hubble's law, which is what explains that all galaxies move away from each other at a speed proportional to their distance. This movement is due to the fact that the explosion that took place with the origin of the universe during the Big Bang, continues to release energy.

There is no force of gravity or friction in the universe. Therefore, if there is nothing to stop that force that drives the Big Bang, the universe will continue to expand and with this, the galaxies will continue to move at a constant speed.

By means of the comparisons between the different galaxies that he discovered he was able to establish the magnitudes of linear relation to add in Hubble's law. From these discoveries he drew the conclusion that the universe has a homogeneous composition.

Thanks to the contributions of Hubble on the expansion of the constant universe, today it is known that If we observe our galaxy from anywhere in the universe it will always look the same. This is due to the permanent expansion that the universe experiences.

Both his theory and all his studies and research have had great repercussions on astronomy and cosmology today. The evolution of galaxies, calculating the age of the universe, the rate of expansion it has and all the subjects related to deep space have their place thanks to Edwin Hubble.

As you can see, this scientist who began as a lawyer has made numerous and important contributions to science.


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