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The universe expands, and that is a known fact proven by science. It is, however, unknown to what rate our universe does so. University of Geneva (UNIGE) proposed a hypothesis, and the person behind it is a theoretical physicist.

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The question in which the hypotheses are from has been boggling minds of even the most celebrated scientists; no one knows the exact speed of the universe's expansion.

There is, however, a way to determine an amount or rate that is close to the correct amount. As of writing, there are two possible calculations for this. However, both return different answers.

The Hubble-Lemaître law has been popularized due to research conducted decades ago. This particular research concluder that the universe is expanding and the galaxies are moving fsr away from each other.

Hubble-Lemaître law, a constant, has also been introduced named the Hubble constant, which is being used as the standard for our universe's rate of expansion. The Hubble constant (H0) implied that the universe is expanding at 70 kilometers per second.

Arriving in this number, however, is complicated and has branched to two different calculations.

Cosmic Microwave Background

The first calculation is heavily based on the cosmic microwave background that is from almost anything on the universe when the universe experienced a very cold.point. This happened 370,000 years of the Big Bang event, where everything, according to scientists, all started.

The data gathered by the Planck space mission are the ones being used to come up with a number which they did, and it appears that this method shows that the H0 is 67.4

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Supernovas are always happening, given that the universe has a lot of stars. Once this stellar event happens, they release a very bright light that can be seen in a very far scope and distance.

Supernovas that happens on very distant star systems and galaxies are more than enough to give any astronomer data to supply propose a solution or calculation for the Hubble constant.

This second approach calculates a 74 flat H0, which is slightly higher than the very first calculation.

Two Methods are Different

Several scientists agreed that these two methods of determining the Hubble constant are striving as time passes by. Throughout the years, they have been supplying accurate data. It is essential to remember, however, that both concepts and ways to determine one single constant isn't the same, and they will continue to be different from each other.

There are a lot of factors that determine the speed of the universe's expansion. 

Professor Lucas Lombrisser, in the Theoretical Physics Department in UNIGE's Faculty of Sciences, proposed something to think about. He said that if the universe is a bubble, a giant one, the scientific community will face difficulties when it comes to finding.out the Hubble constant.

Lombrisser added that for scientists to know the Hubble constant accurately, it should be even more significant, so it gives way for a galaxy that is the primary purpose is for the measurement of the distances, and ultimately, the rate of how fast the universe expands.

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