astro.wikisort.org - Meteorite
Gliese 367 b is an exoplanet orbiting the red dwarf star Gliese 367 (GJ 367), 31 light-years (9.5 parsecs) from Earth in the constellation of Vela.[1] The exoplanet takes just 7.7 hours to orbit its star, one of the shortest orbits of any planet.[2] Due to its close orbit, the exoplanet gets bombarded with radiation 500 times more than Earth receives from the Sun. Dayside temperatures on GJ 367b are around 1,500 °C (1,770 K; 2,730 °F).[3]
Due to its close orbit, it most likely is tidally locked. The atmosphere of Gliese 367 b, due to the extreme temperatures, would have boiled away along with signs of life. The core of GJ 367b is likely composed of iron and nickel, making its core similar to Mercury's core. The core of GJ 367b is extremely dense, making up most of the planet's mass.[4]
References
- Witze, Alexandra (2021-12-02). "This tiny iron-rich world is extraordinarily metal". Nature. doi:10.1038/d41586-021-03587-z.
- Lam, Kristine W. F.; Csizmadia, Szilárd; Astudillo-Defru, Nicola; Bonfils, Xavier; Gandolfi, Davide; Padovan, Sebastiano; Esposito, Massimiliano; Hellier, Coel; Hirano, Teruyuki; Livingston, John; Murgas, Felipe (2021-12-03). "GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star". Science. 374 (6572): 1271–1275. doi:10.1126/science.aay3253.
- Mann, Adam (2021-12-02). "Metal Planet Orbits Its Star Every 7.7 Hours". The New York Times. ISSN 0362-4331. Retrieved 2021-12-05.
- Hellier, Coel. "A new exoplanet: meet GJ 367b, an iron planet smaller and denser than Earth". The Conversation. Retrieved 2021-12-05.
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