SCIENCEglobal
JWST reveals a strange sulfur world unlike any planet we know
Single source
Updated 2 hours ago
First seen March 18, 2026 10:54:10Stay on top of this story
Follow the names and topics behind it.
Add this story's key topics to your watchlist so LyscoNews can highlight related developments and future matches.
Create a free account to sync your watchlist, saved stories, and alerts across devices.
Quick Summary
Astronomers have identified a strange new kind of exoplanet that challenges how scientists classify worlds beyond our Solar System. The planet, L 98-59 d, appears to contain a vast ocean of molten rock beneath its surface that traps large amounts of sulfur deep inside. Observations from the James Webb Space Telescope revealed unusual sulfur-rich gases in its atmosphere and a surprisingly low density for its size.