Abstract In the space of the entire universe, the only conclusive evidence of life, is found on Earth. Although the ultimate source of all life is unknown, many investigators believe Earth, Mars, and Venus may have been seeded with life when these planets, and the sun, were forming in a galactic cluster of thousands of stars and protoplanets. Yet others hypothesize that while and after becoming established members of this solar system, these worlds became contaminated with life during the heavy bombardment phase when struck by millions of life-bearing meteors, asteroids, comets and oceans of ice. Because bolide impacts may eject tons of life-bearing debris into space, and as powerful solar winds may blow upper atmospheric organisms into space, these three planets may have repeatedly exchanged living organisms for billions of years. In support of these hypotheses is evidence suggestive of stromatolites, algae, and lichens on Mars, fungi on Mars and Venus, and formations resembling fossilized acritarchs and metazoans on Mars, and fossilized impressions resembling microbial organisms on the lunar surface, and dormant microbes recovered from the interior of a lunar camera. The evidence reviewed in this report supports the interplanetary transfer hypothesis and that Earth may be seeding this solar system with life.

中文翻译：

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为太阳系播种生命：火星、金星、地球、月球、原行星

摘要 在整个宇宙空间中，唯一确凿的生命证据，是在地球上发现的。尽管所有生命的最终来源尚不清楚，但许多研究人员认为，地球、火星和金星可能是在这些行星和太阳形成由数千颗恒星和原行星组成的星系团时孕育生命的。还有一些人假设，在成为这个太阳系的既定成员时和之后，这些世界在遭受数百万流星、小行星、彗星和冰海的猛烈轰击阶段被生命污染。由于火流星撞击可能会将大量含有生命的碎片喷射到太空中，而强大的太阳风可能会将高层大气生物吹入太空，因此这三颗行星可能已经反复交换了数十亿年的生物。支持这些假设的证据表明，火星上有叠层石、藻类和地衣，火星和金星上有真菌，火星上类似动物化石和后生动物的地层，月球表面类似微生物的化石印象，以及从月球相机的内部。本报告中审查的证据支持行星际转移假设，并且地球可能正在为这个太阳系播种生命。