What is the nickname given to the oldest known star in the universe?

What is the nickname given to the oldest known star in the universe?

  • Grandfather
  • Old Man Star
  • Methuselah
  • Ancient Light




HD 140283 is 190.1 light-years away from Earth. Called the “Methuselah” star, astronomers have determined the age of the star is between 13.7 billion years and 14.5 billion years old. The problem this presents for astronomers is this calculation puts Methuselah as potentially older than the calculated age of the universe. Most researchers set the Big Bang, which created the universe, as occurring about 13.8 billion years ago. Research teams use the Hubble Space Telescope to study the Methuselah star as it passes through Earth’s region of the galaxy. Source: Space.com




Methuselah

HD 140283, informally nicknamed the Methuselah star, is a metal-poor subgiant star about 190 light years away from the Earth in the constellation Libra. Its apparent magnitude is 7.205.



Surface temperature: 5,777 K
Radius: 974,400 km
Age: 14.46 ± 0.8 (minimum 13.66) Gyr
Spectral type: sdF3
Radial velocity (Rv): −169.00 ± 0.2 km/s
Rotational velocity (v sin i): ≤ 3.9 km/s

It is located about 6,000 light-years away from Earth. Astronomers have found what appears to be one of the oldest known stars in the universe. The ancient star formed not long after the Big Bang 13.8 billion years ago, according to Australian National University scientists.