Galactic evolution and the increasing opportunities for Life

被引：0
作者：
Konesky, Gregory [1 ]
机构：
[1] K Plasma Ltd, Hampton Bays, NY 11946 USA
来源：
INSTRUMENTS, METHODS, AND MISSIONS FOR ASTROBIOLOGY XVI | 2013年 / 8865卷
关键词：
Origin of Life; Galactic Habitable Zone; Galactic Evolution; Element Nucleosynthesis; Fermi's Paradox; MAGNETIC-FIELDS; HABITABLE ZONE; STAR-FORMATION; 1ST STARS; GALAXY; GAS; STARBURST; REDSHIFT; POPULATION; ASTRONOMY;
D O I：
10.1117/12.2021353
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Cosmologists refer to elements heavier than helium as "metals" and are essential as the building blocks of life, as well as the formation of rocky, terrestrial, Earth-like planets on which life is likely to be found. Widely-accepted cosmological models suggest the early universe was extremely metal-poor, limiting opportunities for life to arise. With the formation of galaxies and on-going stellar synthesis of heavy elements, these opportunities continue to improve. We consider the Galactic Habitable Zone of our Milky Way galaxy, how it may have appeared in the past, and how it may evolve over time, increasing the likelihood of the formation of rocky Earth-like planets, and the opportunities for life to emerge on them.
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