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Origin of life
The Big Bang of
Biology offers some key insights into the possible origin of life.
point many of the answers about the origin of life are not known but
with increasing study of subjects like astrobiology
they may emerge in the
next several decades. Progress in all of this work is tightly linked to the other pillars of science.
Of course in other solar systems life may have
followed a different path because conditions were different. One
interesting speculation is that life did not emerge here but drifted in
from some other place. This is called panspermia.
Cosmology and the standard model
James D. Bjorken*
published 26 February 2003
“… it is well known, … that other properties of our universe are very finely tuned and will only exist over a quite small bandwidth. We shall pay special attention to such ‘‘anthropic’’ constraints, as discussed for example in the book by Barrow and Tipler and will be interested in the bandwidth in R for which they are satisfied.”… Crucial to the properties of nuclear and atomic matter are the values of the fine-structure constant - here constrained to a reasonable range of values, the ratio of electron to proton mass, the ratio of pion to proton mass, and the neutron proton mass difference ….Finally, we may consider the mechanism for producing carbon in stars. This depends upon the existence of the anthropically famous triple-alpha reaction …with the resonance in 12C predicted by Hoyle … together with the absence of a crucial level in 16O.”