What in the World Are we one step closer to discovering life on other planets?
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Nov 11, 2025 Join Caroline Steel, a BBC science and space expert, as she dives into the exciting discovery of TRAPPIST-1e, an Earth-sized planet in the habitable zone potentially capable of hosting life. She discusses the significance of its atmospheric clues, particularly hints of nitrogen, and the implications for extraterrestrial existence. Young members of the Cosmic Girls Foundation share their hopes and curiosity about alien life. With insights on the James Webb Space Telescope's role and the challenges of future human exploration, this conversation explores the fascinating potential of our universe.
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Promising Earth‑Sized Candidate
- TRAPPIST-1e is an Earth-sized rocky exoplanet in its star's habitable zone, raising real possibilities for liquid water.
- Researchers have ruled out thick hydrogen or CO2 atmospheres, which would have made the planet too hot.
Nitrogen Atmosphere Is A Key Clue
- Initial analysis suggests TRAPPIST-1e may have a nitrogen-dominated atmosphere rather than hydrogen or CO2.
- A nitrogen-rich atmosphere is an important clue because Earth's atmosphere is mostly nitrogen and supports life.
Young Scientists' Enthusiastic Reactions
- Simena said the discovery made her excited and spurred immediate investigation into TRAPPIST-1e.
- Vanessa, who loves biology, said such planets make her wonder if life exists beyond Earth.