Astronomers Discovered a Brand-New Type of Planet That Reeks of Rotten Eggs and Defies Planetary Science
The Daily Galaxy • • general
Key Points:
- Astronomers have discovered a new class of exoplanet, L 98-59 d, located 35 light-years away, characterized by a global magma ocean and a dense sulfur-rich atmosphere, defying traditional planetary categories.
- Unlike Earth, L 98-59 d’s surface is entirely molten silicate due to an intense greenhouse effect from its thick sulfur atmosphere, allowing the magma ocean to persist for billions of years.
- The planet likely evolved from a sub-Neptune, losing much of its primordial atmosphere and shrinking, resulting in an unusually low density that challenges existing planetary formation theories.
- This discovery, based on advanced computer models and observational data, enhances scientists' ability to infer the internal composition and history of distant exoplanets without direct exploration.
- Future telescopes are expected to reveal more unique exoplanets like L 98-59 d, potentially transforming current models and expanding our understanding of planetary diversity beyond the Solar System.