3 ms·
Umm... no? Life on Earth started about 4 billion years ago. The universe is about 13 billion years old. Also, earlier stars had lower metallicity, which made it
by AngryParsley 16y ago
Umm... no? Life on Earth started about 4 billion years ago. The universe is about 13 billion years old. Also, earlier stars had lower metallicity, which made it less likely for rocky planets to form. Population I stars (like the sun) are probably the first generation of stars with high enough metallicity to make rocky planets and life likely.