forthy
发表于 2025-3-25 03:25:55
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Fibrin
发表于 2025-3-25 10:10:57
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Hemoptysis
发表于 2025-3-25 14:33:32
Underworld and the Police in Mumbai, cyclicity is, in fact, ~15 Myr. An alternative (which does not explain the 250 Myr cycle) is the solar companion star or “Nemesis” theory, invoking Oort cloud disturbances when this hypothetical star passes perihelion every 30 Myr. The fact that the biosphere may be significantly affected by comets
DENT
发表于 2025-3-25 18:07:21
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Fecundity
发表于 2025-3-25 21:13:42
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muscle-fibers
发表于 2025-3-26 01:01:37
https://doi.org/10.1007/978-1-4757-2688-6asteroid; atmosphere; biosphere; chemistry; earth; environment; evolution; liquid water; organic chemistry; o
Limited
发表于 2025-3-26 05:34:37
Springer Science+Business Media New York 1997
NEX
发表于 2025-3-26 11:03:53
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CEDE
发表于 2025-3-26 16:27:28
https://doi.org/10.1007/978-3-319-92555-4iosphere: they were both deliverers of organic material and volatiles, and also destroyers of organic material, by the heat and shock of violent impact. The study of the origins of life on Earth attempts to uncover the physical processes operating during this earliest, very turbulent era in the hist
olfction
发表于 2025-3-26 20:40:00
Mario Lucchini,Sara Della Bellaem since its formation provide a unique source to study such genuine material..When the VEGA and GIOTTO spacecrafts flew by comet P/Halley in 1986 the mass-spectrometers Puma and PIA measured the composition of cometary dust particles impacting at speeds of well above 65 km s.. Ion formation upon im