WHL0137-LS, also known as Earendel, is a star located in the constellation of Cetus. Discovered in 2022 with the Hubble Space Telescope, it is the earliest and most distant known star, at a comoving distance of 28 billion light-years. From Wikipedia
Ambiguous JWST spectral signatures prevent a definitive classification, prompting researchers to pursue microlensing flicker monitoring.