منابع مشابه
Directed Panspermia
Microbial swarms aimed at star-forming regions of interstellar clouds can seed stellar associations of 10 100 young planetary systems. Swarms of millimeter size, milligram packets can be launched by 35 cm solar sails at 5E-4 c, to penetrate interstellar clouds. Selective capture in high-density planetary accretion zones of densities > 1E-17 kg m is achieved by viscous drag. Strategies are evalu...
متن کاملPanspermia Revisited
The discovery of evidence for life on Earth more than 3850 million years ago (1) naturally encourages a revival of speculation about the possibility that life did not originate on Earth, but was carried to the planet in the form of microorganisms such as bacteria, either by natural processes or deliberate seeding of the Galaxy by intelligent beings. This idea, known as panspermia, has a long hi...
متن کاملPanspermia 2003: New horizons
Data acquired from various scientific disciplines in the past five years have converged to elevate the status of panspermia as one of the major contenders in theories of the origins of life on Earth. We review the trends that point towards a vindication of the idea that biomaterial from comets may be distributed widely throughout the universe and might even be reaching us in the present day.
متن کاملDNA Movies and Panspermia
There are several ways that our species might try to send a message to another species separated from us by space and/or time. Synthetic biology might be used to write an epitaph to our species, or simply "Kilroy was here", in the genome of a bacterium via the patterns of either (1) the codons to exploit Life's non-equilibrium character or (2) the bases themselves to exploit Life's quasi-equili...
متن کاملPanspermia and Horizontal Gene Transfer
Evidence that extremophiles are hardy and ubiquitous is helping to make panspermia a respectable theory. But even if life on Earth originally came from space, biologists assume that the subsequent evolution of life is still governed by the darwinian paradigm. In this review we show how panspermia could amend darwinism and point to a cosmic source for, not only extremophiles but, all of life. Th...
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ژورنال
عنوان ژورنال: Life Sciences in Space Research
سال: 2014
ISSN: 2214-5524
DOI: 10.1016/j.lssr.2014.07.003