Alien worlds may have tides and air

• Autores: Leah Crane
• Localización: New scientist, ISSN 0262-4079, Nº. 3160, 2018, pág. 14
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Outer planets in the TRAPPIST-1 star system might be more conducive to life than people imagined. TRAPPIST-1 is relatively close to the solar system and hosts seven planets that are potentially Earth-like. Their cores are stretched by gravity, which generates heat. And the two furthest away from their star could be warm, wet and perhaps even have atmospheres. They have very little data on these planets. They know their distances from their star and one another, and their approximate sizes and masses. Based on this limited information, Amy Barr at the Planetary Science Institute in Tucson AZ estimated the distribution of four materials within each planet--iron, rock, ice and liquid water