GRAZE
发表于 2025-3-30 10:54:17
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frugal
发表于 2025-3-30 14:26:17
Sandra L. Newsome,William R. Spillersucleus as its component icy volatiles sublimate. Driven mainly by water ice sublimation at surface temperatures . > 200 K, this coma is a gravitationally unbound atmosphere in free adiabatic expansion. Near the nucleus (≤10. km), it is in collisional equilibrium, at larger distances (≥10. km) it is
美丽的写
发表于 2025-3-30 18:46:26
Optimally-Directed Innovative Designi, and the processes shaping their surfaces, is extremely limited, thus use of the Deep Impact data to show the geological context of the cratering experiment is crucial. This article briefly discusses some of the geological issues of cometary nuclei.