Daily cosmobite: how old is the oldest star?

27_Artist impression oldest star_ESOOur nearest star, the Sun, is about 5 thousand million years old and, though this may seem an advanced age, there are older stars. In 2007 astronomers using the Very Large Telescope in Chile announced that they have found the oldest known star. They claim that the star HE 1523-0901 is 13.2 thousand million years old.

Artist’s impression of the oldest star. Courtesy ESO

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