Webb Found a Planet Wrapped in Massive Haze, Leaving Scientists Unable to See Its Atmosphere
The Daily Galaxy • • science
Key Points:
- New observations from the James Webb Space Telescope reveal that exoplanet Kepler-51d is covered by an exceptionally thick haze layer, preventing scientists from identifying its atmospheric composition.
- Kepler-51d, located about 2,615 light-years away, is part of a rare class of super-puff planets with extremely low densities and unusual structures that challenge current planetary formation models.
- The planet's orbit close to its active host star raises questions about how it retains its atmosphere, as stellar winds should strip away gases over time, suggesting it may have migrated inward from a farther position.
- JWST's extended infrared observations found no clear molecular signatures, indicating a haze layer possibly similar to Titan's atmosphere but much larger, enveloping nearly the radius of Earth.
- While the team considered whether rings could explain the unusual data, the atmospheric haze model better fits the observations; ongoing studies are examining other super-puff planets in the system for similar traits.