Kepler-442b

Kepler-442 b este o exoplanetă posibil super-locuibilă care orbitează în jurul stelei Kepler-442. A fost descoperită în 2015 cu telescopul spațial Kepler și se află la aproximativ 1.120 de ani-lumină depărtare de Pământ. Planeta Kepler-442b face o rotație completă în jurul stelei sale în 112 zile, este cu aproximativ o treime mai mare decât Pământul și are o probabilitate de 60 % să fie o planetă telurică.[1]

Caracteristici

Kepler-442b este o exoplanetă, probabil telurică[2], care orbitează în zona locuibilă a stelei Kepler 422, stea de tipul spectral K, situată la aproximativ 1.120 de ani-lumină de Pământ, în constelația Lirei. Descoperită prin metoda tranzitării, are un volum comparabil cu cel al Pământului, cu o rază de 1,34 ori mai mare[3]. Fiind situată în zona locuibilă, este posibil să prezinte apă lichidă la suprafață. În plus, a fost descrisă ca una din exoplanetele cele mai asemănătoare cu Pământul,[4] și poate chiar să fie o candidată la statutul de planetă super-locuibilă.

Note

  1. ^ jurnalul.ro : Știință. „ANUNȚ FABULOS! Ce au descoperit astronomii americani cu ajutorul telescopului Kepler (VIDEO)”. 
  2. ^ The Guardian. „Kepler 438b: Most Earth-like planet ever discovered could be home for alien life”. Accesat în . 
  3. ^ „NASA Exoplanet Archive Science Institute”. Accesat în . 
  4. ^ „Kepler-442 pe Open Exoplanet Catalogue”. 

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