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More Galaxies Than We Thought

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New Information But Same Knowledge

Nor does it mean that the universe has a mass ten times higher than what we calculated. The mass is the same as before but distributed in a different way to what we believed until now. Parallelism is like knowing that 1 million people live in a city, and discover that they live in 100,000 buildings instead of 10,000. The amount of population remains the same, but its distribution is different.

As the authors of the study say, the total number of galaxies in the universe is an interesting question, although it does not have to reveal any fundamental information about the cosmology or the functioning of the cosmos. In a way, we could say that it is one of those curiosities that is very well to know but that, in the end, does not change our previous perception.

How Can We Calculate?

To reach this conclusion, the researchers observed the most profound images of the universe, taken in different works. For example, the ultra-deep field image of the Hubble telescope. For that image, the famous telescope focused on a single point in the sky for 1 million seconds (approximately 11 days), to see what it captured. The result is an image that is impressive both in its beauty and its depth.

The Universe Has More Galaxies Than We Thought

A new study, published in the prestigious journal Astrophysical Journal, makes a fantastic claim. The number of galaxies in the universe is ten times higher than we thought so far. As minimum. To the eye of a good Cubero, we are talking about 2 billion galaxies.

Observing The “invisible.”
There are two ways to achieve it. On the one hand, we can try to keep the sky as far as possible, to see all the galaxies that we find, and then add all the galaxies that we can find in a volume of any space.If we observe these galaxies with care, we can group them according to their size. Of course, on the other hand, that amount changes with distance.Galaxies began to form only a few hundred million years after the formation of the universe, and many of them were small. With the passage of time, they merged to form more massive galaxies (such as the Milky Way). So we have to carefully count how many galaxies there are in the volume of space up to a distance X from us, and then do the same for other, more distant regions, and so on.

That we do not see 90% of the galaxies in the universe does not mean that we have the explanation for dark energy. We know that it is not composed of any normal matter, such as that which is part of stars, planets, and people. These galaxies are incredibly far away, but stars, gas, and dust from them precisely like the galaxies that we find here. They are just very dim.