What the discovery of the star Eärendel teaches us about the first moments of the universe

  • Oscar del Barco Manzo
  • The conversation*

Image of the galaxy that hosted the primordial star Eärendel,

image source, NASA, ESA, Brian Welch (JHU), Dan Coe (STScI)

Caption,

Image of the galaxy that hosted the primordial star Eärendel.

Eärendel is the furthest individual star ever observed to date.

It owes its name to the poem written by Tolkien in 1914, Earendel’s Journeyinspired by Anglo-Saxon mythology.

But what can a star that no longer exists teach us about the life and death of its fellow men? And the Big Bang?

According to the calculations of the authors of this important discovery, published in the journal Nature, Eärendel it would have a mass 50 times that of the Sun and would have formed 900 million years after the Big Bang.

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