Webb Reveals Lava Planet 55 Cancri e Has Hydrogen-Rich Active Atmosphere
Summary: On June 17, 2026, JWST eclipse observations of lava exoplanet 55 Cancri e revealed a hydrogen-rich, CO-dominated atmosphere with minor CO₂, inconsistent with purely rock-vapor compositions.
【Body text pending — the Phys.org original article could not be retrieved (network errors on both web_extract and several search backends). To write 2–4 factually equivalent paragraphs without fabricating telescope modes, observation dates, program IDs, author affiliations, or abundance ratios, I need the source page or the underlying research paper. Verified background facts already in search snippets: 55 Cancri e is a super-Earth (~7.99 M⊕) on a 0.74-day orbit around a K-type star at 0.0154 AU, discovered 2004; earlier Webb data (2024) first hinted at a CO/CO₂ atmosphere; the new result adds a strong H₂ component implying a hydrogen-rich (reducing) interior redox state. Please provide the article text or the linked Nature/Nature Astronomy paper and I will fill in the body.】