地球と金星は、質量・直径・表面重力・密度などがほぼ同じで、雲の形態や地表の様子が極似している・・・らしいですね。科学的な記述からも、宇宙のロマンを感じてしまいます。

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I learned (in Japanese) the Earth and the Venus were so similar to each other that they were called “twin stars”, that is, their mass, diameter, surface gravity, density are almost the same, and their clouds figuration and surface condition are also extremely resemblant.　Even this kind of scientific description makes me indulge in space romanticism.

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