Life Itself: Its Origin and NatureA basic book about biology, the origin of life, and the origin of man. |
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Page 15
... radiation . In this book I explore a variant of panspermia which Leslie Orgel and I suggested a few years ago . To avoid damage , the microorganisms are supposed to have traveled in the head of an unmanned spaceship sent to earth by a ...
... radiation . In this book I explore a variant of panspermia which Leslie Orgel and I suggested a few years ago . To avoid damage , the microorganisms are supposed to have traveled in the head of an unmanned spaceship sent to earth by a ...
Page 30
... radiation , together with a rather small number of experimental facts , such as the cosmic radiation background which now pervades all space -the faint whisper of creation just audible in radio tele- scopes . Such an imaginative ...
... radiation , together with a rather small number of experimental facts , such as the cosmic radiation background which now pervades all space -the faint whisper of creation just audible in radio tele- scopes . Such an imaginative ...
Page 76
... radiation was not greatly differ- ent from what we receive today . One possible difference af- fecting the radiation which reached the surface of the earth may have been the absence of the present ozone ( O3 ) layer , since if there was ...
... radiation was not greatly differ- ent from what we receive today . One possible difference af- fecting the radiation which reached the surface of the earth may have been the absence of the present ozone ( O3 ) layer , since if there was ...
Contents
Times and Distances Large and Small | 19 |
The Cosmic Pageant | 29 |
The Uniformity of Biochemistry | 37 |
Copyright | |
11 other sections not shown
Common terms and phrases
amino acids asteroid atmosphere atoms bacteria Big Bang billion years ago CALIFORNIA carbon cell chance chemical reactions common compounds copied detail difficult Directed Panspermia distance DNA replication double helix easy energy environment enzymes ERSITY especially eukaryotes evolution evolved exactly fairly favorable fossil galaxy gene genetic code Hâ‚‚ happened higher hydrogen idea journey large numbers least Leslie Orgel LIBRARY light light-years living system mechanism messenger RNA microorganisms mitochondria molecular natural selection nitrogen nuclear nucleic acid oceans orbit organic molecules Orgel origin oxygen particular Perhaps planetary systems polypeptide chain possible prebiotic present primitive earth probably problem produced prokaryotes radiation rare event reason replication RNA molecules rocket SAN DIEGO scale seems simple small molecules solar system soup space spaceship speed stars started structure suitable planet surface temperature theory thousand tion tRNA UNIV universe unlikely