So when we want to learn whether a planet is habitable, whether it might be amenable to life, we want to know not only how much total light it receives and how warm it is, but we want to know about its space weather -- this high-energy radiation, the UV and the X-rays that are created by its star and that bathe it in this bath of high-energy radiation.
ですから惑星が居住可能か 生命が存在しうるか 調べたいときには その惑星が総合的に受ける光の量や 暖かさだけでなく その宇宙の「天気」についても知りたいのです 高エネルギー放射線や 紫外線やＸ線が 恒星から発せられて 惑星に降り注ぎます