Earendel, the most distant star ever discovered, can be seen in this image of the Sunrise Arc galaxy. Details Photos courtesy of NASA/ESA/CSA
Earendel is so distant that the starlight glimpsed by the Webb telescope was emitted within the first billion years of the universe. The universe is estimated to be about 13.8 billion years old.
Webb’s observations have revealed new insights about the incredibly distant star. Earendel is a massive B-type star about 1 million times more luminous than our sun and more than twice as hot. Massive stars such as Earendel typically have companion stars, and while astronomers didn’t expect to be able to spot one, the colors detected by Webb suggest the potential presence of a cool, red companion star.
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