Complex sentence: Temperature estimates of the photosphere of Wolf 359 range from 2,500 K to 2,900 K, which is sufficiently cool for equilibrium chemistry to occur, and for the resulting chemical compounds to survive long enough to be observed through their spectral lines.
Split into simpler sentences: Temperature estimates of the photosphere of Wolf 359 range from 2,500 K to 2,900 K, which is sufficiently cool for equilibrium chemistry to occur. The resulting chemical compounds survive long enough to be observed through their spectral lines.