Methuselah: The oldest star in the universe


In 2000, scientists looked to date what they thought was the oldest star in the universe. They made observations via the European Space Agency’s (ESA) Hipparcos satellite and estimated that HD140283 — or Methuselah as it’s commonly known — was a staggering 16 billion years old.

Such a figure was rather baffling. After all, the age of the universe — determined from observations of the cosmic microwave background — is 13.8 billion years old, so how can a star be older than the universe?



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