Watch The Mysterious- Star That Appears To Be Older Than the Space - Physics-Astronomy.org

Watch The Mysterious- Star That Appears To Be Older Than the Space

The oldest recognized star seems to be older than the universe itself, but a new study is facilitating to clear up this obvious enigma.
Earlier study had predictable that the Milky Way galaxy's so-called "Methuselah star" is up to 16 billion years old. That's a problem, as the majority scientists agree that the Big Bang that made the universe happen about 13.8 billion years ago. Now a team of astrophysicists has resulting a new, less ridiculous age for the Methuselah star, combining in order about its distance, brightness, work of art and structure.
Put all of those constituent together, and you get an age of 14.5 billion years, with a residual doubt that makes the star's age well-matched with the age of the cosmos," study chief writer Howard Bond, of Pennsylvania State University and the Space Telescope Science organization in Baltimore, said in an announcement.
The doubt Bond refers to is plus or minus 800 million years, which means the star could really be 13.7 billion years old — younger than the cosmos as it's currently understood, though just barely.
A mysterious, fast-moving star:
Bond and his team utilize NASA's Hubble Space Telescope to study the Methuselah star, which is additional formally known as HD 140283. Researchers have known about HD 140283 for additional than 100 years, as it journeys crossways the sky at a comparatively rapid clip. The star moves at approximately 800,000 mph (1.3 million km/h) and cover the width of the full moon in the sky each 1,500 years or so, scientists said.
The star is presently passing through the Earth's neck of the galactic woods and will in the end rocket back out to the Milky Way's halo, a public of earliest stars that surrounds the galaxy's familiar spiral disk. The Methuselah star, which is presently now swelling into a red giant, was possibly born in a dwarf galaxy that the promising Milky Way gobbled up more than 12 billion years ago, scientists said. The star's extended, looping orbit is possibly a residue of that strong act of cannibalism.
Distance makes the difference:
Hubble's calculation permitted the astrophysicists to shine the distance to HD 140283 using the principle of parallax, in which a alter in an observers' location — in this case, Hubble's variable place in Earth orbit — translates into a shift in the misleading position of an object.
They exposed that Methuselah lies 190.1 light-years away. With the star's reserve known more accurately, the team was capable of operational out Methuselah's intrinsic brightness, a require for calculating its age.

The researchers also applied present theory to learn additional about the Methuselah star's burn rate, composition and internal structure, which as well shed light on its possible age. For an instant, HD 140283 has a moderately high oxygen-to-iron ratio, which takes the star's age downward from some of the former estimates, scientists said.In the finish, the astrophysicists estimated that HD 140283 was born 14.5 billion years ago, plus or minus 800 million years. Additional study could help bring the Methuselah star's age down even additional, making it clearly younger than the space, scientists said.

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