5 Facts Methuselah Star
Netgenz - Science | HD 140283 or known as the Methuselah Star had become an interesting puzzle in the world of astronomy. The problem is that scientists consider if the age of this star is older than the age of the universe!
Giving the name Methuselah to HD140283 refers to a figure in the Bible named Methuselah who has the longest life, which is 969 years. Then, did this star really exist before the formation of the universe? Yok read his narrative in the following article.
Here are 5 Facts Methuselah Star
1. Located in the constellation Libra
Located in the constellation Libra
The star Methuselah lies between the constellations Ophiuchus and the star Zubeneschamali (Beta Librae), the brightest star in the constellation Libra. This star can be seen in the night sky through a binocular telescope, of course at a location that is less polluted by light.
The star Methuselah was first discovered in 1912 by an American astronomer named Walter Adams. Based on assessments using the Hubble Space Telescope, astronomers predict the star Methuselah is 190, one light-year from Earth.
2. Is it really older than the universe?
Is it really older than the universe?
In 2000, a group of astronomers from the European Space Agency (ESA) tried to determine the age of the star Methuselah using the Hipparcos satellite. Based on published calculations, the age of the star Methuselah was found, which is 16 billion years. This discovery was sure to shake everyone up.
Many riddles arise, is it possible that the emergence of the universe was not the beginning of everything, or actually the universe did not form as we think? In fact, based on calculations using the micro-cosmic background, scientists have determined that the new universe is between 10 and 13, eight years old. If the star Methuselah is 16 billion years old, it means that this star is 2.2 billion years older than the universe!
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3. Recent research shows the star Methuselah is younger than the universe
Recent research shows the star Methuselah is younger than the universe
It's logically impossible, right, a star can form if only some of the ingredients that make it up are not present. Scientists of course do not take for granted the age of the star Methuselah as stated in his initial research. Various studies continue to be carried out to reveal the truth behind the age of this star.
Quoted from Space, Bond and his team studied the age of the star Methuselah using the contributions of the Hubble Space Telescope. In 2013, they published the age of the star Methuselah, which was 14.46 billion years (with an error of ±0.8 billion years). Even though he is still older than the universe, at least this age is younger than his initial age prediction.
Recently, in 2021, Tang and his team published a journal regarding the correction of the age and mass of the star Methuselah. In his journal, Tang attributes the age of the star Methuselah to 12.01 billion years (with a calculation error of ±0.5 billion years), making the star Methuselah about 1-2 billion years younger than the universe. Because of this latest research, in the end, the presence of the Methuselah star is no longer a myth!
4. Does this make Methuselah the oldest star?
Does this make Methuselah the oldest star?
So far, Methuselah is the oldest star ever discovered by astronomers. It is not surprising that the age determination was confusing. But, in fact, the Methuselah star is not the first star to appear in the universe, you know.
The stars in the universe are classified into three communities, depending on the metal content in them. Community III is the oldest, the stars in community III are composed of lighter components such as hydrogen and helium. Methuselah stars are counted in community II stars, aka stars that are poor in metal content. It is different from the Sun, which is counted as a community I because it already contains many heavy components.
5. Currently the star Methuselah is dying
Currently, the star Methuselah is dying
With the age of the oldest, even older than any star astronomers have found, the star Methuselah is currently in a critical condition. According to the latest news, this star is starting to enter the red giant stage, aka the last stage of stellar evolution.
Later, this star will continue to grow, and slowly lose its mass until it becomes a white dwarf. Billions of years later, when this star has completely cooled, Methuselah will be a black dwarf, emitting no visible light.
From the start of Methuselah, once again we know that even though science is definite knowledge, it does not mean that science is completely free from error and ambiguity. Even though the star Methuselah is no less old than the universe, this star is still one of the oldest stars in the universe.