Back to today’s briefing

Story perspectives

James Webb Discovers Coldest Exoplanet at -125°F

5/2/2025

36 4

Summary

Story summary

Astronomers have made a groundbreaking discovery with the James Webb Space Telescope, identifying WD 1856+534 b as the coldest exoplanet, chilling at -125°F. This ancient planet, older than our solar system, orbits a faint white dwarf star, shedding light on the intriguing phenomenon of planetary migration. These findings deepen our knowledge of the universe's cold worlds.

1 of 1

Story summary

Astronomers have made a groundbreaking discovery with the James Webb Space Telescope, identifying WD 1856+534 b as the coldest exoplanet, chilling at -125°F. This ancient planet, older than our solar system, orbits a faint white dwarf star, shedding light on the intriguing phenomenon of planetary migration. These findings deepen our knowledge of the universe's cold worlds.