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.
Stoga, kada želimo doznati je li planet nastanjiv, je li možda pogodan za život, želimo znati ne samo koliko ukupno svjetlosti primi i koliko je topao, već želimo znati i kakvo mu je svemirsko vrijeme -- radijacija visoke energije, UV i X-zrake koje stvara njegova zvijezda i koje se kupaju u toj kupelji radijacije visoke energije.