helper-T-cells
发表于 2025-3-28 17:01:56
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immunity
发表于 2025-3-28 22:25:06
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野蛮
发表于 2025-3-29 00:46:18
Where to look for life elsewhere in the Solar System,what sort of life we are searching for and where in the Solar System we might find it. In subsequent chapters we consider Mars and Europa in more detail. We then consider potential habitats beyond the Solar System.
开始从未
发表于 2025-3-29 05:52:50
Potential habitats beyond the Solar System,. We shall focus almost entirely on our Galaxy, and in the main on the nearby regions — the difficulties of finding potential and actual habitats increase the more distant the target because generally the light we receive from them is then more feeble.
帐单
发表于 2025-3-29 08:42:49
Searching for planets: direct methods,here we attempt to detect the radiation reflected or emitted by the planet. We could then analyse this radiation to learn about the planet and see whether it is habitable and indeed inhabited. Direct methods are very challenging, more so than . methods where we infer the presence of a planet from it
一条卷发
发表于 2025-3-29 15:21:29
Searching for planets: indirect methods,ts orbiting other stars in this way, and so at present we have to rely on the comparatively less challenging indirect methods. In these methods we infer the presence of a planet from its influence either on the motion of the star it orbits, or on the quantity of radiation we receive from this star o
RAGE
发表于 2025-3-29 17:38:48
How to find life on exoplanets, thus concentrate on life that resembles that on Earth. But we are not assuming that alien life is based on the . carbon compounds as terrestrial life. It might use a carbon compound other than DNA to carry genetic information, and it might use carbon compounds other than proteins to carry out the v
gout109
发表于 2025-3-29 20:02:04
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Basal-Ganglia
发表于 2025-3-30 02:32:34
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富足女人
发表于 2025-3-30 05:42:06
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