Astronomers have spotted the farthest star known to date: Earendel. The light travel distance to this star is 12.9 billion light years, and the proper distance is 28 billion light years. Earendel was discovered by the Hubble Space Telescope using a technique called gravitational lensing. First, Hubble observed the star’s parent galaxy named Sunrise Arc.

Then, a bright object was sitting on the edge of the lensed galaxy. Studies proved that it’s the most distant single star ever recorded.

However, this discovery was made using the Hubble Space Telescope, which primarily works in optical and UV regions of the EM spectrum. The upcoming James Webb Space Telescope can peer further back in time and is expected to break this record.

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