Giant old galaxies are best for life

• Autores: Joshua Sokol
• Localización: New scientist, ISSN 0262-4079, Nº. 3033, 2015, pág. 12
• Idioma: inglés
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• Resumen

  • The idea that the universe might have more and less hospitable regions is speculative, especially since humans have yet to find any instances of alien life. Now two studies have zoomed out even further in an attempt to identify the most habitable types of galaxies. One approach, led by Pratika Dayal at the University of Durham in UK, compares different galaxies to the one known example of an inhabited galaxy, the Milky Way. Dayal proposes that life-friendly galaxies need lots of stars that can host planets, but a low rate of star formation to cut down on the number of supernovae.